可控并联电抗器(CSR)是一种新型FACTS装置,它()于电力系统。
A.串联
B.并联
C.串并联
D.并串联
参考答案:B
—Would you mind not ______ here?
—Oh, sorry. I won't do it again.[ ]
A. smoke
B. smoking
C. to smoke
D. smokes
超声换能器变哪种能变为什么能()。
A.机械、声
B.电、机械
C.热、声
D.任意能、电
E.电、热