單項(xiàng)選擇題
A.520 B.390 C.260 D.130
A.106° B.108° C.110° D.112°
A.10 B.12 C.16 D.20
A.5mm;3mm B.6mm;4mm C.3mm;4mm D.5mm;4mm
A.不準(zhǔn) B.可以 C.不宜 D.不應(yīng)當(dāng)
A.0.6m×0.6m B.0.4m×0.5m C.0.5m×0.5m D.0.5m×0.6m
A.1050 B.1060 C.1080 D.1100
A.5mmB.6mmC.10mmD.15mm
A.0.15 B.0.12 C.0.20 D.0.10
A.380V B.250V C.220V D.400V
A.0.5% B.1% C.1.5% D.2%