Raw lacquer is（）corrosive nature．

Persons engaged in the transport of dangerous goods shall（）training in the contents of dangerous goods requirements commensurate with their responsibilities.

A.have
B.make
C.take
D.receive

点击查看答案

Outlets in gasoline fuel lines are（）.

A.permitted for drawing fuel samples
B.permitted for draining fuel from lines
C.permitted for bleeding air from lines
D.prohibited

点击查看答案