( )是以扩大的分部分项工程为对象编制的。
A．预算定额B．施工定额C．概算定额D．概算指标
参考答案：C
Henry___________ be at home because he phoned me from the farm just now.[ ]
A. mustn't
B. isn't able to
C. may not
D. can't
我国报业集团应怎样组建比较理想的内部组织结构
