答案：C
—Where's Tina?
— She to the library. [ ]
A. goes
B. had gone
C. has gone
D. would go
变压器送电时，操作顺序是（）
A、应先送低压侧，后送高压侧
B、应先送高压侧，后送低压侧
C、不分先后
D、无具体要求
