筑炉工中级筑炉工单项选择题每日一练(2019.01.25)

A.0.5
B.0.4
C.0.3
D.0.2

A.2~3
B.3~4
C.4~5
D.5~6

A.1200
B.1250
C.1300
D.1550

A.Al₂O₃
B.SiO₂
C.MgO
D.SiC

A.80%
B.85%
C.89%
D.93%