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【单选题】
欲将三相异步电动机的定子绕组接成三角形,正确的连接是()。A.
B.
C.
D.
D
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【简答题】we have invited our manager to the party,________he may decide not to come.
【单选题】技师甲说:辛普森行星齿轮机构是两组行星齿轮共用一个太阳轮;技师乙说:腊文朗式行星齿轮机构有两个太阳轮、两组行星齿轮架和一个共用齿圈。谁正确?( )
A.
甲正确;
B.
乙正确;
C.
两人均正确;
D.
两人均不正确。
【单选题】The auctioneer may decide to sell the 'lots' out of order because ______.
A.
he sometimes wants to confuse the buyers
B.
he knows from experience who will want what
C.
he wants to keep certain people waiting
D.
he wants to increase the number of buyers
【单选题】He may decide to ( ) the next cut in interest rates.
A.
delay
B.
decay
C.
relay
D.
relax
【单选题】技师甲说：辛普森行星齿轮机构是两组行星排共用一个太阳轮。技师乙说：拉维娜式行星齿轮机构有两个太阳轮，两组行星齿轮架，共用一个齿圈，试问谁说的正确?
A.
甲正确
B.
乙正确
C.
两人均正确
D.
两人均不正确
【单选题】The auctioneer may decide to sell the 'lots' out of order because ______.
A.
he sometimes wants to confuse the buyers
B.
he knows from experience that certain people will want to buy certain items
C.
he wants to keep certain people waiting
D.
he wants to reduce the number of buyers
【简答题】第二节(共 5 小题 ; 每小题 2 分,满分 10 分) 根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余 选项。 A science teacher's job is teaching science to his students. A person who decides to become a science teacher may have many car...
【单选题】技师甲说:辛普森行星齿轮机构是两组行星齿轮共用一个太阳轮;
A.
乙说：拉维娜式行星齿轮机构由两个太阳轮、两组行星齿轮架和一个共用齿圈。试问谁正确？
B.
甲正确
C.
乙正确
D.
两人均正确
E.
两人均不正确
【单选题】技师甲说:辛普森行星齿轮机构是两组行星齿轮共用一个太阳轮;技师乙说:拉维娜式行星齿轮机构有两个大阳轮、两组行星齿轮架和一个共用齿圈。试同谁正确?
A.
甲正确
B.
已正确
C.
两人均正确
D.
两人均不正确
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