爆炸物品雷管按用途可分为()
A、引信雷管
B、非电雷管
C、工业雷管
D、特种雷管
参考答案:A, C, D, P
The mother didn't know who ________ for the broken glass as it happened.
A.to blame
B.to be blamed
C.blamed
D.is to be blamed
利用单据()功能,可查看到生成当前单据的源头单据。
A.预览
B.查询
C.联查
D.输出