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【单选题】
一对圆柱齿轮,通常把小齿轮的齿宽做得比大齿轮的齿宽宽一些,其主要原因是A.
为使传动平稳
B.
为了提高传动效率
C.
为了提高齿面接触强度
D.
为了便于安装，保证接触线长度
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反馈参考答案：
举一反三
【简答题】在80x86系列微处理器中，最早引入高速缓冲存储器的处理器是【 】。
【单选题】— What do you know about Darwin after he returned from the trip by sea? — Well, he got married and ________ down to live in London. [ ]
A.
solved
B.
settled
C.
stayed
D.
left
【单选题】His first baby was born soon after he got married, which seemed to have ___his sense of responsibility.
A.
brought down
B.
brought out
C.
turned down
D.
turned out
【单选题】一一What do you know about Mike? 一一Well,he got married and in Australia．
A.
settled down
B.
got down
C.
took down
D.
turned down
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