电感是通电线圈的磁通量与通过线圈的()之比。
A、磁感强度
B、磁性大小
C、电流
D、电压
参考答案:C
根据句意及首字母提示完成下列句子。
1. Some kinds of animals like pandas are becoming e
2. Mary's mother s us a delicious lunch last Sunday.
3. Make a l of all the things you have to do at the very beginning.
4. I don't like the t of meat any more. It's terrible.
5. We've come up with a new advertising s for the product.
2型糖尿病发病的重要诱因为()
A.多次妊娠、分娩
B.体力活动减少
C.病毒感染
D.肥胖
E.自身免疫反应