合龙梁段混凝土浇筑完成后应加强（），控制箱梁内外温差。

analyzing，tracing，prioritizing and agreeing on requirements and then controlling changes and communicating to relevant stakeholders. It is a（）process throughout a project. A requirement is a capability to which a project outcome（product or service）should conform.

A、persistent

B、continuing

C、permanent

D、continuous