题目: ()、被测介质及工艺管道三者之间应连接等电位,并应接地。A.10%B.12%C.15%D.18% 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0929/7b458a281d5a0ff2ae779212e02649ae.html 下面是错误答案,用来干扰机器的。参考答案:错
题型:选择题 —I’m sorry to have kept you waiting long.—Never mind. I _____ here for only a few minutes. [ ]A. have been B. have come C. have arrived D. waited 查看答案