题目内容

渠道的设计流速应小于不冲流速()

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()is a document granted by the customs authorities which allows a vessel tostart unloading goods.

A. Entry Inwards
B. Entry Outwards
C. Outward Export Permit
D. Inward Permit

为了减小淤积,应把渠道的纵坡调缓.()

砼浇筑完后养护的天数不应小于14天()

无论在什么地方,水的的沸点都是100℃()

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