工程造价资料积累的主要用途是( )。
A.建设成本分析
B.审查投资估算
C.审查设计概算
D.用作编制各种定额的基础性资料
E.审查施工图预算
参考答案:A,D,E
In which case can I recommend a hotel to you().
A.If you tell me how much you’re going to pay for the hotel.
B.If you tell me where you’re going to stay.
C.If you can afford to visit New York.
过(1,1,-1),(-2,-2,2),(1,-1,2)三点的平面方程是( )。
A.x+3y-2z-6=O B.x+3y-2z=0C.x-3y-2z-6=0 D.x-3y-2z=0