编制设计阶段监理规划的重要依据是( )。
A．施工合同
B．设计文件
C．监理合同
D．设计合同
参考答案：C
---Mum ,____________ May I borrow your camera ?
--- Sure ,here it is .
A．please help me
B．can I ask a favour ?
C．where is your camera ?
D．excuse me .
用简便方法计算：9992+1999
