电流互感器励磁特性测量,一般来讲()电流互感器在拐点的励磁电压无明显的差别。
A.同批
B.同型号
C.同规格
D.同电压等级
参考答案:A, B, C
通过化学反应,物料的化学性质会产生变化。
The details of any language system is passed on from one generation to the next through (), rather than by instinct.
A.learning
B.teaching
C.books
D.both A and B