课件与网络课件均可用于协作学习。
参考答案:错
提出主要工程量和建材需要量,估算工程投资,是()阶段的主要内容之一。“
A.项目建议书
B.预可行性研究
C.可行性研究
D.初步设计
The two leaders made a show of unity at the press conference, though they had notably messages.A. discontinuous B. discreet C. discordant D. disadvantageous