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【单选题】
铰刀校准部分的切削刃上留有后角、宽度仅0.1~0.3mm很窄的棱边的作用是( )。A.
保证表面粗糙度
B.
防止的扩大
C.
保护铰刀
D.
防止铰刀过早磨损
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举一反三
【单选题】What does Jennifer think the most annoying habit in an office?
A.
Tapping on the desk
B.
Arriving late for meetings
C.
Talking in jargon
【单选题】What does the author suggest you think about when you want to get rid of that bad habit?
A.
The adverse effects it has on your life and on the lives of those close to you.
B.
Virtualise the negative thoughts.
C.
Compare with others
D.
Give up social life
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