在主接线设计中,通常采用( )方法限制短路电流。
A.分列运行;
B.切除个别回路;
C.装设限流电抗器;
D.限制机组投入。
参考答案:A,C
组织机构代码中,无属性的数字位数为8位,校验码位数为()。
A.8位
B.4位
C.2位
D.1位
It is hard for me to imagine what I would be doing today if I ________ in love,at the age of seven,with the Melinda Cox Library in my hometown.
A.wouldn't have fallen
B.had not fallen
C.should fall
D.were to fall