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参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】第二篇 Sleep We all know that the normal human daily cycle of activity is of some 7 - 8 hours’ sleep alternating with some 16 - 17 hours’ wakefulness and that, broadly speaking, the sleep n...
A.
people hate the inconvenience of working on night shifts.
B.
your life is disturbed by changing from day to night routines and back.
C.
not all industries work at the same hours.
D.
it is difficult to find a corps of good night workers.
【单选题】G42补偿方向的规定是（）
A.
沿刀具运动方向看，刀具位于工件左侧
B.
沿工件运动方向看，刀具位于工件右侧
C.
沿工件运动方向看，刀具位于工件左侧
D.
沿刀具运动方向看，刀具位于工件右侧