升降式脚手架附墙时，墙体混凝土强度至少要达到______。
A．2 MPa B．6 MPa C．10 MPa D．12 MPa
参考答案：C
— The 2010 Asian Sports Meet this November in Guangzhou.
— Yes. I wish Chinese players will do well. [ ]
A. will be held
B. have been held
C. was to be held
D. would be held
施工组织设计是以施工项目为对象编制的，指导其施工全过程各项施工活动的（）的综合性文件。
A.技术
B.经济
C.组织
D.协调
E.控制
