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【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】物流搬运技术装备的主要作用有()。
A.
提高装卸效率，节约劳动力，减少装卸工人的劳动强度，改善劳动条件
B.
提高作业时间，加速车辆周转
C.
降低装卸质量
D.
提高物料搬运作业成本