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