氨基磺酸的用途是用于清洗()和()。
参考答案:浆料汽提塔;废水汽提塔
—Would you mind _______the window, please ? It′s too hot.
—Of course not. [ ]
A. opening
B. to open
C. closing
D. to close
对于多油断路器对地交流耐压,应在分闸状态下进行。