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【单选题】
减速器等传动中常用的润滑( ) 答案A.
油绳.油垫润滑
B.
针阀式注油杯润滑
C.
油浴、溅油润滑
D.
油雾润滑
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反馈参考答案：
举一反三
【单选题】( 广东卷 )28. Years ago we didn't know this, but recentscience ______ that people who don't sleep well soon get ill.
A.
showed
B.
hasshown
C.
willshow
D.
is showing
【简答题】衡量工人劳动数量和质量，反映成果和效益指标的是（ ）。
【简答题】【 2014·湖南卷】 21 . Children,when ______(accompany) by their parents, are allowed to enter the stadium.
【单选题】( 广东卷 )32. The young girl sitting next to me on theplane was very nervous. She_________ before.
A.
hasn't flown
B.
didn'tfly
C.
hadn'tflown
D.
wasn't flying
【单选题】【 2014·江西卷】26. When it comes to __ in public, no one can match him.
A.
speak
B.
speaking
C.
being spoken
D.
be spoken
【简答题】请简要描述光合作用原初反应的过程?
【简答题】• 【 2014 广东卷】 When we were wondering what to do, the manager came out. She was 22__ (surprise) helpful.
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