A.1 B.2 C.3 D.4
A.1次方 B.2次方 C.3次方 D.不确定
A.3.5% B.5.5% C.7% D.10%
A.0.02 B.0.04 C.0.07 D.0.15
A.100 B.80 C.60 D.50
A.735W B.380W C.145W D.4080W
A.cosφ=0.05～0.2 B.cosφ=0.2～0.3 C.cosφ=0.25～0.35 D.cosφ=0.15～0.5
A.8 B.7 C.5 D.3
A.1.1 B.1.05 C.1 D.0.9
A.宜 B.应 C.不应 D.严禁
