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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】英文缩写ICF是指世界卫生组织的哪类文件
A.
1960年颁布的残疾分类文件
B.
1970年颁布的残疾分类文件
C.
1980年颁布的残疾分类文件
D.
1990年颁布的残疾分类文件
E.
2001年颁布的残疾分类文件
【单选题】世界卫生组织把铝确定为食品污染源之一。铝的下列应用必须加以控制的是 [ ]
A.
用铝合金制门窗
B.
用铝合金作飞机材料
C.
用金属铝制装碳酸饮料的易拉罐
D.
用金属铝制电线