单项选择题
A.2.7³10³5³10-3=0.135 B.10³5³10-3=0.05 C.10³5/350≈0.14 D.10³5/10=5
A.斗臂车绝缘臂 B.绝缘手套 C.绝缘杆 D.空气间隙
A.斗臂车绝缘臂 B.绝缘手套 C.绝缘杆 D.绝缘遮蔽罩