单项选择题

PDM includes four types of dependencies or precedence relationships:
, the initiation of the successor activity, depends upon the initiation of the predecessor activity.
, the completion of the successor activity depends upon the initiation of the predecessor activity.

A. Finish-to-Start
B. Finish-to-Finish
C. Start-to-Start
D. Start-to-Finish

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判断题

玉石的定义：玉，石之美者，有五德：色纯、洁净、坚硬、温润、内外一致。（）
修改：___________________________________________________________

单项选择题

A．充分就业、物价稳定、经济增长、公平分配
B．调控投资总量，保持合理的投资规模
C．调控投资地区布局，促进地区经济协调发展
D．调控投资结构，促进产业结构升级和经济、社会协调可持续发展

单项选择题

A．节流阀
B．安全阀
C．截止阀
D．旋塞阀

PDM includes four types of dependencies or precedence relationships: ______, the initiation of the successor activity, depends upon the initiation of the predecessor activity. ______, the completion of the successor activity depends upon the initiation of the predecessor activity.