—I’m going to Larry’s party. But I don’t know what to wear.

— If  I           you, I           wear a dress.[ ]

A. am; will   

B. were; will    

C. were; would    

D. am; would

接触器触头间出现电弧后，最主要的游离过程是（）。

A、阴极冷发射

B、阴极热发射

C、累积游离

D、热游离