单选题目前电力推进之所以得以迅速发展主要是因为（）。A液压马达驱动技术的发展B交流推进电机由变频技术实现调速C齿轮传动技术发展D自动控制技术的发展
单选题
目前电力推进之所以得以迅速发展主要是因为（）。
A
液压马达驱动技术的发展
B
交流推进电机由变频技术实现调速
C
齿轮传动技术发展
D
自动控制技术的发展
参考解析
解析：
暂无解析
相关考题：
单选题根据IMO对集装箱船舶稳性的要求，横倾角在0°～30°之间，静稳性曲线下的面积应不小于（）m•rad（C为船体形状因数）。A0.016/CB0.009/CC0.09/CD0.006/C
单选题When you turn on the fast time constant (differentiator) control of a radar it will（）.Aenhance weak target echoes and brighten them on the PPIBreduce clutter over the entire PPI by shortening the echoesConly suppress weak targets to a limited distance from the ship (sea clutter)Dreduce the beam width to provide a map-like presentation for navigation
单选题A Certificate of Financial Responsibility attests that the vessel（）.Ahas financial backing to meet any liability resulting from the discharge of oilBhas the minimum required amount of P I and hull insuranceCwill assume the responsibility for any damage or loss to the shipperDhas financial reserves to meet reasonable expected crew costs of an intended voyage
单选题《规则》第十六条规定：“须给他船让路的船舶，应尽可能及早地采取大幅度的行动，宽裕地让清他船”；其对让路船的行动要求可归纳为“早、大、宽、清”4个字；“（）”是对采取避让行动的时机提出的要求。A早B大C宽D清
单选题The abbreviation ‘M/E’ is used to represent the（）Ameasure equipmentBmain electricalCmy engineDmain engine
单选题The crankpins and journals were machined and matching holes bored in the webs, which were slightly （） in diameter.AsmallerBlargerChigherDlower
单选题During the day，a vessel picking up a submarine cable shall carry（）.AThree shapes，the highest and lowest shall be red balls，and the middle shall be a white diamondBTwo black ballsCThree shapes；the highest and lowest shall be black balls，and the middle shall be a red diamondDThree shapes；the highest and lowest shall be black balls and the middle shall be a black diamond
单选题防止筒状活塞式柴油机气缸套低温腐蚀的措施可采用（）。A碱性气缸油B控制燃油中的硫分C降低冷却水出口温度D保证燃油完全燃烧