风流的全压、静压、动压的正确关系是()。
A.压入式通风时,
B.压入式通风时,
C.抽出式通风时,
D.抽出式通风时,
参考答案:A, C
常规民用爆炸物品基本包装单元一般为()。
A、卷
B、发
C、箱
D、袋
She likes to use words ___ is clear to us.
A.of which meaning
B.whose of meaning
C.meaning of which
D.of which the meaning