道路运输硝酸的车辆着火时,应采用_____灭火。
A.雾状水
B.强大水流
C.泡沫灭火剂
参考答案:A
Speaker A: Do you mind if I sit down hereSpeaker B: ______
A.Of course. Do sit down, please.
B.Not at all. There's plenty of room.
C.Never mind. I'd like to have some companion.
D.Sure, I'd like to have somebody to talk to.
在战略数据规划方法中,经常使用的一类简明、直观的图形工具,它就是______。