下列组件中属于电流互感器结构部分的有()。
A.铁芯
B.一次绕组
C.二次绕组
D.压力释放阀
参考答案:A, B, C
We've just returned from a holiday and there is a lot to deal with.Let's ________ it.[ ]
A.keep up with
B.do away with
C.get down to
D.look forward to
我国的外资股包括()。
Ⅰ.红筹股
Ⅱ.蓝筹股
Ⅲ.境内上市外资股
Ⅳ.境外上市外资股
A.Ⅲ、Ⅳ
B.Ⅰ、Ⅱ、Ⅲ
C.Ⅰ、Ⅱ、Ⅳ
D.Ⅰ、Ⅲ