造球中大部分的水以雾状加在“成球区”的料流上,由于毛细力和机械力作用,使物料很快形成母球()
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Section BDirections: There are ten blanks in the following letter. You are required to choose the best one from the given four choices marked A, B, C, and D. Then write down the correct answer in the
中远物流有100多个配送中心,装GPS的上万辆车每月产生2亿条信息,据此优化运输路线,减排10%()
若1/X是,f(x)的一个原函数,则f,(x)=——.