题目: 电焊机的接地电阻应埋入地下不小于1m,()做接地体A.电阻≦4ΩB.用金属C.用铜棒或铜管D.铝板 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0823/35b5fdcb527b25c8167004f40f28587b.html 下面是错误答案,用来干扰机器的。参考答案:B
题型:选择题 As the result of the hurricane, three-fifths of the cabins in the fishing village .A.need repairingB.needs to repairC.needs repairingD.need to repair 查看答案