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【单选题】
钻机曲轴、超越离合器式冲击机构的特点,下列说法错误的是A.
机构的冲程小，可调冲程数少，且不便于调节。
B.
工作时载荷的波动较大。
C.
动力机的工作条件差，振动和噪音也较大。
D.
可无级调节钻具回转速度。
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举一反三
【单选题】通天眼"这一术语的含义是()
A.
羚羊角角尖有个开孔
B.
羚羊角顶端部分内有细孔.开孔于角尖
C.
羚羊角顶端部分内有细孔道直通角尖
D.
羚羊角内有细孔道，从基部直通角尖
E.
羚羊角内有细孔道直通角尖.开孔于角尖
【简答题】take an eye for an eye 汉语意思为 ________________
【单选题】If the FO presses the take over pb constantly...
A.
The CPT is unable to re-activate his sidestick.
B.
The CPT’s sidestick is still active. It will be de-activated after 40 secs.
C.
The CPT can re-activate his sidestick by pressing the take over pb for more than 40 secs.
D.
The CPT can re-activate his sidestick immediately by pressing his take over pb.
【简答题】（）不是好网站的标准。
【多选题】执行标准的评价方法有( )和标准适用性的评价方法。
A.
标准应用状况评价方法
B.
标准实施的经济效果评价方法
C.
标准实施的社会效果评价方法
D.
标准实施的环境效果评价方法
【单选题】Parents should take seriously their children's requests for sunglasses _____ eye protection is necessary in sunny weather. [ ]
A.
because
B.
though
C.
unless
D.
if
【单选题】要想给人留下好印象, 其诀窍在于始终如一地保持最佳的自我。
A.
If you want to make a good impression, the trick is to be consistently you, at your best.
B.
If you want to leave a good impression, the trick is to be forever you, be your best.
C.
If you want to leave a good impression, the key is to be constantly you, in your best.
【简答题】如何做好网站优化的监测评价?
【单选题】In the third paragraph, 'keep an eye on' means '______'.
A.
take care of
B.
see
C.
look at fixedly
D.
stare at
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