單項(xiàng)選擇題
A.25mm B.35mm C.45mm
A.3874 B.3974 C.4074
A.DC600V B.DC700V C.DC770V
A.≤10% B.≤20% C.≤30%
A.R=50m B.R=150m C.R=250m
A.≥0.78 B.≥0.88 C.≥0.98
A.≥410 B.≥510 C.≥610
A.≥754 B.≥654 C.≥554
A.≥760 B.≥660 C.≥560
A.6064 B.4064 C.0