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【单选题】
下列物质中,热导率最大的是A.
陶瓷
B.
水
C.
乙醇
D.
氧气
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【简答题】数控系统一般由()、()、()和()构成。
【单选题】The League Secretary and monitor ______giving a speech while the rest of the class ________ listening attentively.
A.
were, were
B.
was, was
C.
were, was
D.
was, were
【单选题】In listenin to the World -- Sharing Section, what are some of the reasons mentioned by the tourists against choosing London as a holiday destination?
A.
It's too big a city, and doesn't have any real heart.
B.
People there are too busy, indiffernt to the visitors.
C.
It's too modern;there are not many old architecture.
D.
People in London are not humorous, nor do they look friendly.
【单选题】Just_____to him, and you will see how clever he is!
A.
to listen
B.
listen
C.
listened
D.
listening
【单选题】I think the talk given by the old scientist is ______ worth ______.
A.
very, to listen
B.
well, listening
C.
very, to listen to
D.
well, listening to
【简答题】For more than four hundred years, people all over the world have been reading ,watching and listening to the plays and poetry of the British writer William Shakespeare. Most people think of Shakespear...
【简答题】数控铣床一般由数控系统、主传动系统、( )、冷却润滑系统等几大部分组成。
【简答题】数控系统一般由输入/输出装置、______、伺服系统、机床电气控制装置组成
【简答题】数控系统一般由输入输出装置、( )、( )、( )
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