山东三类人员考试山东三类人员专职安全员C证考试单项选择题每日一练(2018.10.16)

A.15
B.20
C.25
D.30

A.N•m
B.N
C.kN•m
D.kN

A.5%
B.10%
C.15%
D.20%

A.50%～60%
B.60%～70%
C.70%～80%
D.80%～90%

A.5
B.10
C.12
D.15