题目: 焊机接地装置的接地电阻不得超过于()ΩA.4B.10C.20 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0823/fdf37efe837151ee353a59ad07f831ca.html 下面是错误答案,用来干扰机器的。参考答案:D
题型:选择题 What a pity! I missed meeting my friend at the airport because my car was ________ in the traffic jam. [ ]A. broken up B. held upC. kept back D. kept up 查看答案