铸铁管员考试单项选择题每日一练(2018.12.09)

A.82
B.86.7
C.92.3
D.95

A.1-1.5
B.1-9
C.10-22
D.25-32

A.0.1
B.0.5
C.1.0
D.1.5

A.不预热
B.预热
C.无须求

A.6
B.2
C.4
D.1