A.脫崗 B.睡崗 C.酒后上崗 D.以上行為均不被允許
A.0.1%~0.5% B.0.5%~5% C.5%~10% D.15%~25%
A.0.5;0.7 B.0.7;0.5 C.0.5;0.3 D.0.3;0.5