危险化学品库房门应为铁门或木质包铁皮,采用()开式。设置高侧窗(剧毒物品仓库的窗户就加设铁护栏)。
A、外开式
B、内开式
C、内、外开式都可以
参考答案:A
— I find it astonishing that John ____ be so rude to me.
— Not astonishing at all. He is always rude to others.
A.should
B.must
C.might
D.ought to
蟾酥内服一次用量是
A.0.015~0.03gB.0.3~0.6gC.0.1~0.2gD.0.002~0.004gE.以上都不是