“两小臂水平置于胸前,五指伸开,手心朝下,同时水平挥向两侧”的手势信号为()。
A. “停止”
B. “紧急停止”
C. “降臂”
D. “升臂&rdquo
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()forms over land,most frequently during autumn and winter over low-lying land,especially if it is damp and marshy and in valleys on quiet nights with clear skies.
A. FRONTAL FOG
B. MIXING FOG
C. ADVECTION FOG
D. RADIATION FOG
制药块(片)应采用湿药切割,定量()kg。
A. 10
B. 5
C. 2