由互感现象产生的感应电动势叫做()。
A.电动势
B.自感电动势
C.互感电动势
D.电压
参考答案:C
Here are all the books I have.You may borrow _______ you like.
A.that
B.which
C.however
D.whichever
简述电导率仪的工作原理。