单项选择题
A.水口钳 B.剪刀 C.气管夹刀 D.线槽剪
A.连接牢靠 B.绝缘性能好 C.禁止毛刺 D.接头15mm
A.AVVR12*0.3 B.RVVP12*0.3 C.#25*6P+PEB D.#25*12P+PEB