对于施工图纸存在的问题,要求相关单位以书面形式提出,在( )以书面形式进行解释或确认后,才能进行施工。
A.设计单位B.建设单位C.监理单位D.承包单位
参考答案:A
-What was Susan doing at 8 last night?
-She __________ her homework at 8 last night.
A. is doing
B. was doing
C. did
D is did
直线L1:2x=5y=z-1与平面∏:4x-2z=5的位置关系是().
A.直线L与平面∏平行
B.直线L与平面∏垂直
C.直线L在平面∏上
D.直线L与平面∏相交,但不垂直