施工现场改变脚手架类型时,必须重新修改脚手架方案并经重新()后,方可施工。
A、编写
B、支搭
C、审批
参考答案:C
一色环电阻由左至右三个色环颜色分别为红、棕、黄,其阻值为()。
A.2.1K
B.21.3K
C.210K
D.420K
—What are your plans for the weekend?
—______. [ ]
A. I've no idea
B. I don't know, either
C. I'd like some holiday
D. I have done the work