《国际危规》中将危险货物分为()类,其中工业酒精属于()
A.九类;第三类
B.九类;第四类
C.十类;第三类
D.十类;第四类
参考答案:A
All the preparations for the task _____, and we’re ready to start.
A.completed
B.complete
C.had been completed
D.have been completed