—What's she doing at the supermarket?

—She is doing ________ for the family. [ ]

A. the shop

B. the shops

C. the shopping

D. the shoping

下列哪个地方不需要进行防水处理（）

A.室外接地点

B.室内接地点

C.RRU电源航空头

D.RRU上跳线