下列哪些病症与脾虚血少有关 ()
A.缺乳
B.闭经
C.滑胎
D.妊娠眩晕
E.产后大便难
参考答案:A, B, C, D, E
在危险化学品( )、储存数量构成重大危险源时,企业应当向国务院主管部门办理危险化学品登记。
A.生产
B.运输
C.使用
D.销毁
I don't know ________. [ ]
A. where does he come from
B. what is his name.
C. how old he is
D. when will he leave