()局部排风应单独设置
A.相同空气洁净度的洁净室
B.产尘和有害气体的洁净室
C.排放介质的毒性大
D.排放介质混合后有腐蚀、燃烧、爆炸等危险性
参考答案:B, C, D
我们家乡泰兴所在的温度带和干湿地区是( )
A.亚热带、湿润地区
B.热带、半湿润地区
C.暖温带、半干旱地区
D.中温带、干旱地区
"You realize that you were driving at 100mph, don't you No, officer, I may not have been. This car can't do more than 80. "
A.will not
B.cannot
C.might not
D.could not