A.100% B.13.4% C.8.9% D.3.4% E.1%
A.二極管 B.電子管 C.場(chǎng)效應(yīng)管 D.IGBT E.高壓硅柱
A.1/3~1/1 B.1/4~1/2 C.1/5~1/3 D.1/6~1/4 E.1/7~1/5