【简答题】从方框中选择适当的句子补全对话,其中有两项是多余的 。 (L-Lily; M-Mary; H-Mrs. Hu) L: It's five thirty. I'm going home now. M: (1) _________ Can you give me a ride to the supermarket on your way home? I have to buy some food. ...
【单选题】用无限稀释的HCl, KCl和NaCl三种溶液,在相同温度、相同浓度、相同电强度下,溶液中Cl-的迁移速率( ),迁移数( )。
【单选题】----It's very cloudy and freezing cold. ----- Yes, I' m afraid it________be snowing tonightA.must
A.
24.----It's very cloudy and freezing cold. ----- Yes, I' m afraid it________be snowing tonight A.must
【多选题】向客户提供信息和交车时,下列说法正确的是( )
【单选题】下列关于向客户―提供信息和交车的说法中,哪一项是正确的?()
C.
合适的时候,向客户指出此次修理过程中发现的其它问题