第一篇:中國地質(zhì)大學(xué)2014年秋季學(xué)期期末平時作業(yè)答案《大學(xué)英語》
大學(xué)英語(3)
100分答案,30題后的1-20題為緊接著的31-50題。更新于2014年12月30日
by林總and蛙哥
1、That is the dog_______name is Henry.A whose
B who
C whom
D which
2、He goes to school by bike, and the_______takes half an hour.A travel
B journey
C voyage
D trip
3.The next train to Beijing_______here at 3'o clock.A.is due
B.is due to
C.is due for
D.due to
4.Theyall_______the job.A.asked after
B.asked for
C.asked to
D.asked with
5、We'll_______our discussion tomorrow.A
carry out
B
carry on
C
carry through
D
carry forward
6、He is over fifty, but he looks as though he_______only in his thirties.A were B is C will be
D has been
7、By next year he_______in New York for five years.A has worked
B has been working
C works D will have worked
8、The heavy rain stopped us_______at the station on time.A to arrive
B arrive C arrived D from arriving
9、I’d rather stay at home than ___________a walk.a、taking
b、to take
c、take
d、to be taking
10、The definition leaves_______for disagreement.A.a small room B.much room C.great deal room
D.not so big a room
11、The sun heats the earth,_______is very important to living things.A.that
B.what
C.which
D.where
12、Mr.Smith, together with his wife and children,_______going to the party this weekend.A.am
B.is
C.are
D.will
13、Please leave the key under the door_______you go out.A.in case
B.in the case
C.in case of
D.in the case of
14、If you want to visit someone in England, you'd better make arrangement_______.A in time
B in turn
C inadvanc D in detail
15、It is hoped that the weather will_______warm for three more days.A last B go on
C keep on
D stay
16、Mr.Smith_______a most important part in the development of our city.A took B had C played D made
17、Let's not wait any longer, he might not_______at all.A turn over
B turn up
C turn on
D turn down
18、We are_______in the future of our motherland.A aware B confident C sure D certain
19、I saw she was in a difficulty with all those parcels, so I offered my_______.A services B money C use D chance
20、The patient acted on the doctor's_______and finally recovered.A advices B advice
C advise D advises
21、Not always_______they want(to).A people can do what
B can people do what C eople cannot do what
D can't people do what
22、The work_______by the time you get there.A will have been done
B was done
C had been done
D has done
23、Once you're into basketball, you'll find_______great fun to play as a way to relax.A it B that C this D what
24、I don't think he will be back in an hour,_______? A do I
B won't he
C don't I
D will he
25、They are_______students that they all performed well in the nationwide examinations.A so diligent
B such diligent
C so much diligent
D such very diligent
26、This is the problem_______we have no good solution as yet.A to that
B which C for which
D to which
27、The population of the earth_______increasing fast.One third of the population here_______ workers.A is;are
B is;has been
C are;is
D is;was
28、Not until most of the people had left the airport_______his sister was there.A that he saw
B had he seen
C did he see
D that he had seen
29、They handed in their paper_______.A in line
B by turn
C at turn
D in turn
30、He_______himself quickly to the new condition of his work.A changed B altered C adjusted D varied
第二篇:中國地質(zhì)大學(xué)2016年秋季大學(xué)英語1期末平時作業(yè)
004km.cnicking(野餐).選項1: Despite on 選項2: However 選項3: Although 選項4: In spite of 第12題
___________ you finish your homework, you can抰 watch TV.選項1: If 選項2: Therefore 選項3: However 選項4: Unless 第13題
__________________ her last Saturday, I would have told her the news.選項1: If I met 選項2: Have I met 選項3: If I had met 選項4: If I have met 第14題
______ yesterday, I would have asked him not to do that.選項1: Provided he came 選項2: if he came 選項3: If he had come 選項4: Has he came 第15題
If they _________________ searching, I would have died.選項1: have given up 選項2: gave up 選項3: had given up 選項4: has given up 第16題
He is always getting ___________ me for minor mistakes.004km.cn 選項1: for 選項2: at 選項3: away 選項4: over 第17題
Can you help me ______________ the bag please? 選項1: at 選項2: with 選項3: for 選項4: to 第18題
Who do you think should be responsible _____________ this? 選項1: with 選項2: for 選項3: of 選項4: to 第19題
They discussed the problem three or four times, but could come to no ___________.選項1: end 選項2: result 選項3: conclusion 選項4: judgement 第20題
Bill doesn抰 _____________ what people say about him.選項1: concern 選項2: matter 選項3: care 選項4: disturb 第21題
-Do you think I should study Japanese or French?
-_______________.選項1: It's your own decision
004km.cn 選項2: None of your business 選項3: It's up to you 選項4: That's all right 第22題
I am very ______________ in reading books.選項1: interested 選項2: favourite 選項3: liking 選項4: lovable 第23題
She is _______________ of snakes.選項1: afraid 選項2: fearing 選項3: terror 選項4: horrible 第24題
Are you ______________ of the mistakes you have made? 選項1: aware 選項2: sure 選項3: clear 選項4: knowing 第25題
Joan had ________________ for 75 hours before she got her licence.選項1: fly 選項2: flown 選項3: to fly 選項4: flying 第26題
Thirty per cent of meals ______________ by families in the USA are eaten at one of the big chains.004km.cn 選項1: consuming 選項2: consumed 選項3: to consume 選項4: are consumed 第27題
The concert usually takes place at the People抯 Square, with the audience _____________ on the ground.選項1: seating 選項2: seated 選項3: be seating 選項4: to seat seated Jack is good, hard working and intelligent.__________.I can抰 speak too highly of him.選項1: As a result 選項2: By the way 選項3: On the contrary 選項4: In a word 第29題
This is change ________________ never before experienced.選項1: with a scale 選項2: in a scale 選項3: for a scale 選項4: on a scale 第30題
Cities attract people because of the ______________ for labour in the manufacturing and
service industries.選項1: requirement 選項2: call 選項3: interest 選項4: demand
第三篇:中國地質(zhì)大學(xué)-公共經(jīng)濟學(xué)-平時作業(yè)
1.以下因素中,與政府轉(zhuǎn)移性支出沒有直接關(guān)系的選項是(C)。
A.加速資本積累
B.社會福利制度的法律規(guī)定
C.領(lǐng)土防衛(wèi)
D.經(jīng)濟周期
2.分稅制是一種中央與地方政府劃分公共收入的財政管理體制;實行分稅制,要求按照稅種實現(xiàn)“三分”?!叭帧敝傅模ˋ)。
A.分權(quán);分稅;分管
B.分錢;分稅;分管
C.分錢;分稅;分權(quán)
D.分錢;分權(quán);分管
3.由于某地發(fā)生地震導(dǎo)致大量民宅損毀,財政部和民政部緊急向該地撥款用于重建居民住宅。這種來自中央政府的轉(zhuǎn)移支付屬于(A)。
A.專項轉(zhuǎn)移支付
B.分類轉(zhuǎn)移支付
C.一般性轉(zhuǎn)移支付
D.橫向轉(zhuǎn)移支付
4.下列因素中,與存款創(chuàng)造貨幣乘數(shù)的決定因素?zé)o關(guān)是(D)。
A.由中央銀行決定的法定存款準備金率
B.由商業(yè)銀行決定的超額存款準備金率
C.由企業(yè)和個人決定的現(xiàn)金漏損率
D.由國際貨幣基金組織決定的基金份額比例
5.為了克服造紙廠向河流中排放污水所導(dǎo)致的對社會的負外部效應(yīng),政府采取的外部效應(yīng)內(nèi)在化的措施應(yīng)當是(A)。
A.向造紙廠征收矯正性稅收
B.給予造紙廠校正性財政補貼
C.為造紙廠安裝污水凈化設(shè)備
D.關(guān)閉造紙廠
6.下列關(guān)于規(guī)費收取和成本的表述中錯誤的選項是(B)。
A.政府部門收取規(guī)費的數(shù)額,在理論上通常有兩個標準:填補主義和報償主義
B.報償主義,即以政府部門提供服務(wù)所支付的成本來確定規(guī)費的收取標準
C.填補主義,即根據(jù)政府部門提供服務(wù)所需的費用數(shù)額來確定規(guī)費的收取標準
D.特許權(quán)收費并不完全是無償性的收費,其直接成本是政府為了維持壟斷權(quán)而動用有關(guān)國家權(quán)力的成本;間接成本是全體社會成員為壟斷行業(yè)產(chǎn)品缺乏競爭力而支付的較高價格
7.下列表述中,對于拉弗曲線關(guān)于稅率和稅收關(guān)系的表述錯誤的是(B)。
A.拉弗曲線表明,當稅率為0時,政府沒有收入
B.拉弗曲線表明,當稅率為100%時,政府的收入可以實現(xiàn)最大化
C.拉弗曲線表明,一旦超過人們可忍受的最大稅率,稅率的上升就會造成稅收的下降
D.拉弗曲線表明,在人們可忍受的稅率幅度內(nèi),稅率的上升可能會帶來稅收的增加 8.收入通常被認為是測度納稅人的納稅能力的最好的尺度。在下列有關(guān)收入標準看法的選項中,錯誤的是(C)。
A.收入并不是衡量納稅人相對經(jīng)濟地位的足夠精確的指示器。因為收入一般是以貨幣收入來計算的,而許多納稅人可以取得除貨幣以外的實物收入,對實物收入不征稅顯然不夠公平
B.納稅人的收入有多種來源,既包括有勤勞收入,也包括有不勞而獲的意外收入或其他收入。對不同來源的收入不加區(qū)分,統(tǒng)統(tǒng)視作一般收入來征稅有失公平
C.只有對于貨幣以外的收入征收與貨幣收入同樣比例的稅收,才是公平的
D.收入最能決定一個人在特定時期內(nèi)的消費或增添其財富的能力。收入多者表示其納稅能力大,反之則小
9.下列失業(yè)者中,屬于摩擦失業(yè)的是(A)。
A.由于遷移居住地,還沒有找到新工作的失業(yè)者
B.由于經(jīng)濟不景氣而被企業(yè)解雇的失業(yè)者
C.不滿意工資水平而選擇辭職領(lǐng)取失業(yè)救濟的失業(yè)者
D.由于國際產(chǎn)業(yè)結(jié)構(gòu)調(diào)整,所在產(chǎn)業(yè)向海外轉(zhuǎn)移,因而失業(yè)的失業(yè)者
10.下列選項中,不屬于英國古典政治經(jīng)濟學(xué)家亞當·斯密的稅收原則理論的是(B)。
A.平等原則
B.財政原則
C.便利原則
D.最少征收費原則
11.下列關(guān)于現(xiàn)代信用貨幣的表述中,錯誤的選項是(C)。
A.現(xiàn)代社會的貨幣是貨幣符號
B.信用貨幣從本質(zhì)來看,實際上都是貨幣符號
C.貨幣符號的價值由內(nèi)在價值保證
D.在信用貨幣時代,狹義的貨幣是指現(xiàn)金和可用于轉(zhuǎn)賬結(jié)算的活期存款
12.下列稅收中屬于直接稅的是(A)。
A.個人收入所得稅
B.增值稅
C.消費稅
D.營業(yè)稅
13.下列物品中,屬于價格排他性公共物品的是(C)。
A.國防
B.外交
C.高速公路
D.市政公路
14.下列有關(guān)稅基彈性效應(yīng)的表述中,錯誤的選項是(C)。
A.改變稅率可能引起人們調(diào)整經(jīng)濟行為,從而引起稅基隨之變動。稅基對稅率的反應(yīng)程度就是稅基對稅率的彈性
B.稅率的變化同稅基的變動一般是反方向的,即降低稅率引起稅基的擴大,提高稅率引起稅基的縮小
C.理論上,在一個對稅率變化較為敏感的社會中,提高稅率的措施通常會造成經(jīng)濟規(guī)模的擴張 D.若稅基彈性系數(shù)大于1,即|Ebr|>1,即表明稅基彈性較大,或者說稅基會對稅率的變化做出劇烈的反應(yīng)
15.下列選項中,屬于通過增加轉(zhuǎn)移支付反衰退的擴張性財政政策的一般路徑是(B)。
A.經(jīng)濟衰退→政府增加開支→政府購買增加→人民來自政府的收入增加→乘數(shù)效應(yīng)多倍擴張→社會總需求擴張→私人消費投資增加→物價上漲→就業(yè)增加→經(jīng)濟復(fù)蘇
B.經(jīng)濟衰退→政府增加開支→轉(zhuǎn)移支付增加→低收入階層可支配收入增加→乘數(shù)效應(yīng)多倍擴張→社會總需求擴張→私人消費投資增加→物價上漲→就業(yè)增加→經(jīng)濟復(fù)蘇
C.經(jīng)濟衰退→政府削減稅收降低稅率→政府收入減少→人民可支配實際收入增加,資本積累加速→乘數(shù)效應(yīng)多倍擴張→社會總需求擴張→私人消費投資增加→物價上漲→經(jīng)濟復(fù)蘇
D.經(jīng)濟衰退→政府增加開支→轉(zhuǎn)移支付增加→低收入階層可支配收入減少→乘數(shù)效應(yīng)多倍擴張→社會總需求擴張→私人消費投資減少→物價下降→就業(yè)增加→經(jīng)濟復(fù)蘇
16.在下列關(guān)于公債流動性效應(yīng)的表述中,錯誤的選項是(B)。
A.一般來說,公債的期限越短,債券價格波動的風(fēng)險就越小,它在投資損失較小條件下的變現(xiàn)能力也就越強,或者說流動性越高
B.公債的期限越長,債券價格的穩(wěn)定性就越強,債券的流動性也越高
C.政府執(zhí)行擴張性的經(jīng)濟政策時,可以在公債二級市場上賣出短期債券同時買入長期債券的辦法,來擴大商業(yè)銀行持有公債的比重,從而增加擴張信用的基礎(chǔ)和社會中的流動性
D.政府執(zhí)行緊縮性的經(jīng)濟政策時,可以在公債二級市場上買進短期債券同時賣出長期債券的辦法,來縮小商業(yè)銀行持有公債的比重,從而減少擴張信用的基礎(chǔ)和社會中的流動性
17.下列關(guān)于瓦格納定律的表述中正確的是(C)。
A.瓦格納定律認為在社會經(jīng)濟日益工業(yè)化的過程中,政府活動不斷擴張所帶來的公共支出的不斷增長,僅僅是指絕對量的增長,不是指公共支出占國民收入相對量的增長
B.瓦格納定律認為在社會經(jīng)濟日益工業(yè)化的過程中,政府活動不斷擴張所帶來的公共支出的不斷增長,不僅是指絕對量的增長,而且指公共支出占國民收入相對量的增長
C.瓦格納定律認為在社會經(jīng)濟日益工業(yè)化的過程中,政府活動不斷擴張帶來了公共支出的不斷增長,但并沒有說明是指絕對量的增長還是指公共支出占國民收入相對量的增長
D.瓦格納定律認為在社會經(jīng)濟日益工業(yè)化的過程中,政府活動不斷擴張所帶來的公共支出占國民收入相對比例的增長會永遠持續(xù)下去
18.下列關(guān)于供給學(xué)派政策主張的表述中錯誤的是(A)。
A.政府應(yīng)當停辦社會福利,取消一切社會保障措施
B.供給學(xué)派主張嚴格限制受領(lǐng)者標準,降低保險津貼和福利救濟金額
C.供給學(xué)派主張遏制社會福利的增長幅度,從而遏制政府開支增長的速度,減少赤字
D.供給學(xué)派認為從長期看政府應(yīng)遏制財政赤字及國債總額的增長,甚至是消滅赤字;但在短期中,政府財政平衡的目標可以被暫時犧牲
19.自然率在不同的國家,不同的經(jīng)濟發(fā)展階段是不同的;不同的社會福利水平,甚至不同的宗教信仰,都有可能影響自然率的大小。下列關(guān)于自然率的表述中錯誤的是(C)。A.在相近的經(jīng)濟發(fā)展水平上,市場經(jīng)濟化程度較高的國家中充分就業(yè)的就業(yè)率,要高于政府對市場有較多干預(yù)和管制的國家
B.對公民轉(zhuǎn)移支付較多的國家的自然率,要高于轉(zhuǎn)移支付較少的國家 C.福利水平較低社會的自然率,要高于福利水平較高的國家
D.德、法、瑞典等絕大部分歐盟國家和北歐國家的自然率,要高于英、美、日、加等國的充分就業(yè)水平下的自然率 20.金融危機產(chǎn)生的原因多種多樣,但形形色色的金融危機都有四個共同點(A)。A.貨幣性、擴散性、后果的長期性、災(zāi)難性 B.貨幣性、擴散性、后果的短期性、災(zāi)難性 C.貨幣性、擴散性、后果的短期性、災(zāi)難性 D.實體經(jīng)濟性、擴散性、后果的長期性、災(zāi)難性
21.下列關(guān)于政府稅收乘數(shù)的表述中錯誤的是(C)。
A.政府稅收對國民收入是一種收縮性的力量。增加政府稅收可以壓縮總需求,減少國民收入
B.減少政府稅收可以擴大總需求,增大國民收入 C.稅收乘數(shù)與政府支出乘數(shù)方向相反,大小相等
D.稅收的增加要通過壓低納稅人可支配收入,并在扣除邊際儲蓄傾向因素后才能發(fā)揮減少社會總需求,進而減少國民收入的乘數(shù)作用
22.按照芒德爾的“政策配合說”,以貨幣政策促進外部均衡,以財政政策促進內(nèi)部均衡。理論上,一國如果出現(xiàn)了高失業(yè)率與國際收支逆差,那么財政政策和貨幣政策的搭配應(yīng)當是(C)。
A.擴張性財政政策和擴張性貨幣政策 B.緊縮性財政政策和擴張性貨幣政策 C.擴張性財政政策和緊縮性貨幣政策 D.緊縮性財政政策和緊縮性貨幣政策
23.下列失業(yè)者中,屬于摩擦失業(yè)的是(A)。
A.由于遷移居住地,還沒有找到新工作的失業(yè)者 B.由于經(jīng)濟不景氣,而被企業(yè)解雇的失業(yè)者
C.不滿意工資水平,而選擇辭職領(lǐng)取失業(yè)救濟的失業(yè)者
D.由于國際產(chǎn)業(yè)結(jié)構(gòu)調(diào)整,所在產(chǎn)業(yè)向海外轉(zhuǎn)移,因而失業(yè)的失業(yè)者
24.最可能造成隱蔽性財政赤字的直接原因是(A)。
A.財政賬面上的收入與真正的收入不一致,賬面收入大于真正收入,存在著沒有實際物資保證的收入
B.由于經(jīng)濟的周期性變化而造成的政府開支增長而收入下降所產(chǎn)生的財政赤字 C.在編制預(yù)算時,就存在收不抵支的情況,從而出現(xiàn)的賬面赤字 D.由于季節(jié)性收支不同步而產(chǎn)生的階段性財政收支差額 25.償還期限自發(fā)行日起在6個月內(nèi)的中央政府債券是(B)。
A.市政債券 B.國庫券 C.中期國債 D.可轉(zhuǎn)換國債券
26.稅收對于私人投資和資本形成都具有重要的影響,下列相關(guān)表述中正確的是(B)。
A.發(fā)達國家經(jīng)驗表明,為實現(xiàn)經(jīng)濟穩(wěn)定增長,投資年增長率必須大大低于經(jīng)濟增長率。低稅率能夠遏制貨幣資產(chǎn)資本化,促進投資,增加就業(yè)。因此提高稅率是加速資本形成
B.發(fā)達國家經(jīng)驗表明,為實現(xiàn)經(jīng)濟穩(wěn)定增長,投資年增長率必須大大高于經(jīng)濟增長率。低稅率能夠加速貨幣資產(chǎn)資本化,促進投資,增加就業(yè)。因此降低稅率是加速資本形成
C.發(fā)達國家經(jīng)驗表明,為實現(xiàn)經(jīng)濟穩(wěn)定增長,投資年增長率必須大大低于經(jīng)濟增長率。低稅率能夠加速貨幣資產(chǎn)資本化,促進投資,增加就業(yè)。因此降低稅率是加速資本形成
D.發(fā)達國家經(jīng)驗表明,為實現(xiàn)經(jīng)濟穩(wěn)定增長,投資年增長率必須大大高于經(jīng)濟增長率。低稅率能夠遏制貨幣資產(chǎn)資本化,促進投資,增加就業(yè)。因此提高稅率是加速資本形成
27.下列有關(guān)稅負轉(zhuǎn)嫁與成本變動規(guī)則關(guān)系的表述中,錯誤的是(D)。
A.一般而言,成本固定的商品,所課之稅有全部轉(zhuǎn)嫁買方的可能
B.一般而言,成本遞增商品,所課之稅轉(zhuǎn)嫁于買方的金額可能少于所課稅款額 C.一般而言,成本遞減商品,不僅所課之稅可以完全轉(zhuǎn)嫁給買方,還可獲得多于稅額的價格利益
D.一般而言,商品成本的變化與稅負轉(zhuǎn)嫁能否發(fā)生沒有任何關(guān)系
28.法定稅率作為稅法上規(guī)定的稅率指的是(B)。
A.實際稅率 B.名義稅率 C.邊際稅率 D.平均稅率
29.在一國內(nèi)部的政府間轉(zhuǎn)移支付中,一般用于對具體建設(shè)項目補助的轉(zhuǎn)移支付是(A)。A.專項轉(zhuǎn)移支付 B.分類轉(zhuǎn)移支付 C.一般性轉(zhuǎn)移支付 D.橫向轉(zhuǎn)移支付
30.下列有關(guān)公共財政思想的表述中錯誤的是(D)。
A.取眾人之財?shù)囊?guī)模取決于眾人要求辦之事的規(guī)模
B.要想決定公共收入,就必須先確定政府的職能與服務(wù)的領(lǐng)域,再根據(jù)這些因素確定成本,經(jīng)人民同意后,即以相應(yīng)方式取得 C.公共收入的規(guī)模由人民要求的公共產(chǎn)品的數(shù)量決定
D.以收定支能夠使公共收入有效地反映社會的要求,從而提高公共收入資金的效率
第四篇:中國地質(zhì)大學(xué)-理論力學(xué)-平時作業(yè)
1.彈性碰撞過程一定守恒的是()
A 動能 B沖量 C 能量
D,以上三者都對 2.[參考答案] C 3.[參考答案] B 4.[參考答案] A 5.1
[參考答案] D 6.[參考答案] A 7.定軸轉(zhuǎn)動剛體在下述情況下,其轉(zhuǎn)軸是中心慣性主軸的情況是()
(A)慣性力系向轉(zhuǎn)軸上一點簡化只有主矩
(B)慣性力系向剛體上但不在轉(zhuǎn)軸上某一點簡化,只有主矢(C)慣性力系向轉(zhuǎn)軸上某一點簡化,只有主矢
(D)慣性力系向剛體上不在轉(zhuǎn)軸上的某一點簡化,只有主矩,且主矩與轉(zhuǎn)軸平行。8.剛體作定軸轉(zhuǎn)動時,附加動約束力為零的必要與充分條件是((A)剛體質(zhì)心位于轉(zhuǎn)動軸上
(B)剛體有質(zhì)量對稱面,轉(zhuǎn)動軸與對稱面垂直(C)轉(zhuǎn)動軸是中心慣性主軸
(D)剛體有質(zhì)量對稱面,轉(zhuǎn)動軸與對稱面成一個適當?shù)慕嵌?
9.如圖是(15所示的均質(zhì)圓盤質(zhì)量為m,半徑為R,可繞O軸轉(zhuǎn)動,某瞬時圓盤的角速度為,則此時圓盤的動量大小)
[參考答案] A 10.定軸轉(zhuǎn)動剛體在下述情況下,其轉(zhuǎn)軸是中心慣性主軸的情況是
(A)慣性力系向轉(zhuǎn)軸上一點簡化只有主矩
(B)慣性力系向剛體上但不在轉(zhuǎn)軸上某一點簡化,只有主矢(C)慣性力系向轉(zhuǎn)軸上某一點簡化,只有主矢
(D)慣性力系向剛體上不在轉(zhuǎn)軸上的某一點簡化,只有主矩,且主矩與轉(zhuǎn)軸平行。
11.如圖所示的均質(zhì)圓盤質(zhì)量為m,半徑為R,初始角速度為,不計阻力,若不再施加主動力,問輪子以后的運動狀態(tài)是()運動。
(A)減速(B)加速(C)勻速(D)不能確定
12.如圖所示,質(zhì)量為 的物塊
放在升降機上,當升降機以加速度 向上運動時,物塊對地板的壓力等于()3
[參考答案] B 13.一剛體做瞬時平動,此瞬時該剛體上各點()
(A)速度和加速度均相同(B)速度相同而加速度不相同(C)速度和加速度都不相同(D)速度不同和加速度可能相同
14.如圖所示,半徑為 的圓輪以勻角速度 做純滾動,帶動桿AB作定軸轉(zhuǎn)動,D是輪與桿的接觸點。若取輪心C為動點,桿BA為動坐標,則動點的牽連速度為()
[參考答案] C 15.如圖所示的蕩木機構(gòu)中,O1O2 = CD,O1C = O2D = 1m,在圖示位置時O1C、O2D的角速度為 = 1rad s,角加速度為=2rad/s2,則蕩木中點M的加速度為()
[參考答案] D 16.如圖所示機構(gòu)中做平面運動的構(gòu)件在圖示位置的速度瞬心是()
(A)點(B)點(C)點(D)無窮遠點
17.如圖所示,哪個動點在做加速運動?()
[參考答案] B 18.當物體處于臨界平衡狀態(tài)時,靜摩擦力FS的大小()
(A)與物體的重量成正比(B)與物體的重力在支撐面的法線方向的大小成正比(C)與相互接觸物體之間的正壓力大小成正比(D)由力系的平衡方程來確定
19.正方體上作用有力偶如圖(a)、(b)、(c)所示,下列答案中正確的是()。
(A)(a)圖剛體處于平衡(B)(b)圖剛體處于平衡(C)(c)圖剛體處于平衡(D)三種情況下剛體都不平衡
20.重量為、半徑為R的圓輪,放在水平面上,如圖所示,輪與地面間的滑動摩擦系數(shù)為,滾動摩阻系數(shù)為,圓輪在水平力 的作用下平衡,則接觸處的摩擦力 和滾動摩阻力偶矩 的大小分別為()
[參考答案] C 21.空間任意力系向兩個不同的點簡化,試問下述哪種情況是有可能的()。
(A)主矢相等,主矩相等(B)主矢不相等,主矩相等(D)主矢、主矩都不相等(C)主矢相等,主矩不相等
22.圖中力 在平面OABC內(nèi),該力對x、y、z 軸的矩是()。
[參考答案] C 23.關(guān)于某一個力、分力與投影下面說法正確的是()。
(A)力在某坐標軸上的投影與力在該軸上的分力都是矢量,且大小相等,方向一致(B)力在某坐標軸上的投影為代數(shù)量,而力在該軸上的分力是矢量,兩者完全不同(C)力在某坐標軸上的投影為矢量,而力在該軸上的分力是代數(shù)量,兩者完全不同(D)對一般坐標系,力在某坐標軸上投影的量值與力在該軸上的分力大小相等
24.若剛體在四個力作用下處于平衡狀態(tài),則該四個力的作用線是否一定匯交于一點。((A)和三力平衡匯交一樣,該四力作用線一定匯交于一點(B)四力作用線不一定匯交于一點(C)四力作用線一定不匯交于一點(D)四力作用線一定平行
25.力偶對物體的作用效應(yīng),取決于()
(A)力偶矩的大小(B)力偶的轉(zhuǎn)向(C)力偶的作用平面
(D)力偶矩的大小,力偶的轉(zhuǎn)向和力偶的作用平面)
26.重量為 的物塊放置在粗糙的水平面上,物塊與水平面間的靜摩擦系數(shù)為,今在物塊上作用水平推力 后物塊仍處于靜止狀態(tài),如圖所示,那么水平面的全約束反力大小為()
[參考答案] C 27.如圖所示三種受力情況,關(guān)于對支座A、B約束反力大小正確的答案是()
[參考答案] B 28.圖(a)、(b)、(c)所示為結(jié)構(gòu)在水平力 的作用下處于平衡狀態(tài),則三種情況下鉸鏈A的約束反力方向是否相同?
(A)在圖(a)和圖(b)中,鉸鏈A的約束反力方向相同(B)在圖(a)和圖(c)中,鉸鏈A的約束反力方向相同(C)在圖(b)和圖(c)中,鉸鏈A的約束反力方向相同(D)三種情況下,鉸鏈A的約束反力方向均不相同
29.如圖所示為均質(zhì)圓盤用細繩懸掛,并靠在光滑斜面上。在圖1(a)、(b)、(c)、(d)所示的四種狀態(tài)中,只有()圖可以保持平衡。
[參考答案] C 30.如圖3所示的各圖為平面匯交力系所作的力多邊形,下面說法正確的是()
(A)圖(a)和圖(b)是平衡力系(B)圖(b)和圖(c)是平衡力系(C)圖(a)和圖(c)是平衡力系(D)圖(c)和圖(d)是平衡力系
第五篇:中國地質(zhì)大學(xué)繼續(xù)教育學(xué)院2012秋季期末機考——大學(xué)英語滿分答案
單項選擇題
當前
I’ve always enjoyed __A_____.If I don’t have to work late on Friday, I might __C_____ dancing with friends.play get go swimming to swim swim
You’d better stop __B_____.We’re listening to the news.to talk talking talk
He stopped ___A____ TV when the dinner was ready.watching to watch watch
After they finished ___A____ football, they went for a drink in a pub.playing to play play
He said he ____C___ shopping with his girlfriend on Monday.He ____A___ when the teacher came in.was singing sang goes has gone went will sing
She didn’t go to the party ____C___ she was tired.so
A: What are you going to do this weekend? B: If the weather ____C___ good, I might play tennis.will be
The money, ___C____ was his, was left on the table.that X
While I ___A____ the bus, it started to rain.was waiting for waited for
am waiting for which was is although because
The police arrived quickly, ____A___ it was too late.but
The woman ___C____ teaches us English comes from Britain.which
We won’t have the rehearsal if it ___B____ tomorrow.rained rains will rain she who and so
She didn’t go to the party ____B___ she was tired.but because
He __C_____ when the teacher came in.Do you know the people ___B____ came here this morning?
which
She won’t leave _____B__ her friends come back.since until when who those sang has sung was singing where
I was watching TV __B_____ the telephone rang.Learning English well isn’t easy ____A___ I like it very much.but
Frank, ____C___ is interested in computer games, came here yesterday.that whom who and because until when after Send me an email ___B____ you arrive in Beijing.On her way to the office, she __B_____ to buy a newspaper.It’s very easy to clean up the room ___A____ can do it.anyone someone no one has stopped stopped is stopping while when if
They might tell him ___B____ about their companies.interesting something something interesting any interesting
I’m going to buy Mary a birthday gift.Do you have ___C____ in mind?
special something special anything anything special I didn’t buy the book because I didn’t have __B_____ money on me.no
Tomorrow is my mother’s birthday.I want to buy ___C____ for her.__B_____ stole his camera while he is lying on the beach.Anyone anything special special something something special any some Someone Everyone
He ____C___ by different people in the company.Because of the illness, she ____C___ in bed for a few months.was keeping
He ___C____ to the hospital after the accident.took was taking
Mike offered to help and so __C____ John.does is
did was taken kept was kept interviewed was interviewing was interviewed
He is a doctor, so ____B___.he does wife
Tom’s computer is broken.He’ll have it ____B___.repairing
She will have the curtain ___B____ before the guests come.to be changed changed changing repaired to repair is his wife his wife is
A: I didn’t have time for lunch today.B: I didn’t ____C___.neither
His teacher doesn’t know where John is, nor _____A__ his classmates.do are does too either
Mr Hilton is not good at music.Neither ____A___ his children.My sister isn't good at singing.I'm not good at singing, ____A___.either neither too
My parents have ___C____ been to the Great Wall.as yet sometime
never are is be
Get up!Mary.Tom has ____B___ called you three times this morning.He has ___A____ gone out.just now soon yet already never
Have you ___C____ seen a tiger?
over just ever
__C_____ the end of the next week, we'll have read five books.Until
For By
He didn't get up ____C___ 10 o'clock this morning.A: Have you been to Canada before? B: ___B___.A: Have you ever seen the film The Day After Tomorrow? B: ___A____.No, I haven't No, I don't
No, I didn't No, I have Yes, I have Yes, I did to for until
A: Have you finished your homework? B: ____C___.A: Have you sent the fax to the travel agent? B: ___A____.Yes, I have Yes, I do No, I didn't No, I haven't finished No, I haven't
Yes, I've done