用于低温(最低温度为-30℃及以下)、重污秽()级或沿海()级地区的220kV及以下电压等级GIS,宜采用户内安装方式。
A.C;
B.E;
C.D;
D.A。
参考答案:B, C
Adrian’s hard work _________. He graduated with good grades and got into a top high school.
A.paid off
B.paid back
C.paid for
D.paid out
影响抽提过程的要素是什么?