变压器负载运行时的外特性是指当负载的功率因数一定时，副边端电压与（）的关系。
A.时间
B.主磁通
C.负载电流
D.变压比
参考答案：C
While my parents _____ last night, I _____ a new computer game in my room. [ ]
A. cooked; have played
B. were cooking; played
C. cooked; am playing
D. were cooking; was playing
在取保候审期间，应当中断对案件的侦查、起诉和审理。( )
