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【单选题】
螺旋传动的特点是（）。A.
具有自锁性，减速比大
B.
传动效率高
C.
传动平稳，但传动比小
D.
可以用于增速运动
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举一反三
【单选题】请按时间排列下列事件的正确顺序（） ①马克思、恩格斯在伦敦出席共产主义者同盟大会 ②马克思、恩格斯在巴黎相会 ③《共产党宣言》的发表 ④法国里昂工人起义
A.
①②③④
B.
④②③①
C.
③④①②
D.
④②①③
【单选题】听力原文：If one of the food links is not kept, what will happen to the food chains? (12)
A.
Breaking up.
B.
Dying out.
C.
Stopping.
D.
Disappearing.
【单选题】What do sales figures reflect in free market terms?
A.
They reflect the manufacturers' decision of production cut-backs.
B.
They reflect the state of local market forces at any one place and at any one time.
C.
They reflect the demands and supplies of a corporation.
【单选题】What links cognitive development to the needs of society?
A.
Practical purpose.
B.
Natural human cognitive development.
C.
Language.
D.
Warning of danger.
【单选题】请按时间排列下列事件的正确顺序1马克思、恩格斯在伦敦出席共产主义者同盟大会。2马克思、恩格斯在巴黎相会。3《共产党宣言》的发表4法国里昂工人起义
A.
①②③④
B.
④②③①
C.
③④①②
D.
④②①③
【单选题】Your MPLS implementation is currently using internal backdoor links. What can you do to minimize the impact of having these links？（）
A.
use BGP as the CE-PE routing protocol
B.
use OSPF as the CE-PE routing protocol
C.
use EIGRP as the CE-PE routing protocol
D.
use the SP to redistribute routes as external routes for OSPF and EIGRP
E.
use route redistribution at each location to ensure external routes are imported into the IGP
【单选题】What links the decisions of consumers and firms in a market?
A.
the government.
B.
prices.
C.
coordination officials.
D.
microeconomics.
【单选题】Judging from the context, what does the word 'them' (line 4, paragraph 2) refer to?
A.
Decision makers.
B.
The 'losing' faction.
C.
Anger, resentment, and jealousy.
D.
Other people.
【单选题】Judging from the context, what does the word 'them' (Line 4, Paragraph 4) refer to?
A.
Decision makers.
B.
The 'losing' faction.
C.
Anger, resentment, and jealousy.
D.
Other people.
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