连接滤波器的电缆与高频保护装置的连接应()
A、经过保护屏的端子
B、不经过保护屏的端子
C、经过与否均可
参考答案:B
BP will continue to be focused on making sure that the costs ________with oil spill cleanup in the Gulf of Mexico are paid.
A.covered
B.filled
C.occupied
D.associated
不可控整流电路和可控整流电路的组成和原理有什么区别?