施工单位资料员的岗位必备知识有()。
A.城市建设专业知识
B.施工图纸收发、登记知识
C.科技档案专业知识
D.施工生产管理知识
E.竣工图的绘制知识
参考答案:A, B, D
—Will you please repeat your idea?
—Certainly. But I'm sure that you ________ your attention.[ ]
A. don't pay
B. didn't pay
C. aren't paying
D. weren't paying
将总体单位的标志值排序后处于中间位置的那个标志值称为中位数。