施工准备工作按施工范围可分为四类,不属于这四种类型的是()。
A.分项工程施工准备
B.单位工程施工条件准备
C.单项工程施工准备
D.全场施工准备
参考答案:A
Antarctica is so mystically described by some people. If only I _____ there! [ ]
A. had been
B. have been
C. have gone
D. had gone
我国水的焦点问题有哪些?