轧钢成品工轧钢成品工(初级)单项选择题每日一练(2019.01.20)

A.一排布料
B.二排布料
C.三排布料

A.4~20mm
B.20~240mm
C.20~50mm
D.50~100mm

A.4
B.5
C.6
D.7

A.15
B.18
C.20
D.21

A.3
B.2
C.4
D.1