刮涂乳剂时产生针孔的原因，下述（）错误
A.网版脱脂不良
B.涂膜时停滞
C.灰尘
D.乳剂存放过久
参考答案：B
We have two rooms _______, but I can’t decide ________.
A．to live in, to choose which one
B．lived, choose which one
C．to live in, which one to choose
D．live, which one
口服中毒者，最常用的吸附剂是（）
A.氢氧化钠
B.树脂
C.牛奶
D.鸡蛋清
E.活性炭
