On a single-screw vessel,when coming port side to a pier and being set off the pier,you should().
A. swing wide and approach the pier so as to land starboard side to
B. approach the pier on a parallel course at reduced speed
C. make your approach at a greater angle than in calm weather
D. point the vessel's head well up into the slip and decrease your speed
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超负荷锻炼可以使身体健康素质逐渐得到提高,意味着每次必须练到筋疲力尽。
A. 正确
B. 错误
在有瓦斯抽放宇航局路的巷道内,电缆必须与瓦斯抽管路分挂在巷道两侧。()
A. 正确
B. 错误
母线保护直接()、直接(),当接入元件数较多时,可采用分布式母线保护。