根据《建筑安装工程费用项目组成》(建标[2003]206号)文件的规定,现场项目经理的工资应列入( )。
A.其他直接费 B.现场经费 C.企业管理费 D.直接费
参考答案:C
在等体积的NaCl、MgCl2、AlCl3三种溶液中,分别加入等量的AgNO3溶液,恰好都完全反应,则以上三种溶液的物质的量浓度之比为[ ]
A.1:2:3
B.3:2:1
C.1:1:1
D.6:3:2
The children kept their eyes _____ when they _____ Liu Qian's tricks. [ ]
A. opening; looked
B. open; were watching
C. opening; watched
D. open; were looking