题目内容

双向编组站布置图的折角车流有哪几种?其处理方法有何不同?

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割接时,主干电缆要保证复接模块(复接点)接口的电缆头不小于()

A. 55cm
B. 65cm
C. 75cm
D. 85cm

When considering a vessel’s stability,which spaces in a general cargo vessel are the best locations for the carriage of bulk grain? ()

A. Deep tanks
B. Lower holds
C. Lower holds at the ends of the vessel
D. 'Tween-deck

离子交换树脂有几种密度形式?

试写出原料单耗计算公式和单位。

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