铜管连接，当管径小于22mmlt寸，宜采用（）。
A.对口连接
B.法兰联接
C.承插或套管连接
D.热熔连接
参考答案：C
The Development of Project Management Plan Process includes the actions necessary to define, prepare, integrate, and coordinate all constituent plans into a（）
A.roject Scope Statement
B.Project Management Plan
C.Forecasts
D.Project Charter
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