抗溶性泡沫不仅可以扑救一般液体烃类的火灾,还可以有效地扑救水溶性有机溶剂的火灾
参考答案:对
-I'm terribly sorry that I made your table cloth dirty.
-________. [ ]
A. Never mind
B. Don't mention it
C. That's right
D. Sorry
下列商品中在90℃温度下会收缩变形的是()。
A、氯纶
B、涤纶
C、维纶
D、丙纶