正确答案: B
仅Ⅱ对
题目:假设某一中央冷却系统中设有三台循环水泵,若在热带水域必须同时运行才能满足要求,从可靠性考虑这三台水泵之间是()。Ⅰ.并联关系;Ⅱ.串联关系
查看原题 查看所有试题
学习资料的答案和解析:
[单选题]影响船舶动力装置可靠性的制造因素有()。
质量管理
[单选题]衡量气缸套内圆表面磨损的指标有()。Ⅰ.椭圆度误差;Ⅱ.圆度误差;Ⅲ.圆柱度误差;Ⅳ.内径增量;Ⅴ.磨损率。
C.Ⅱ+Ⅲ+Ⅳ+Ⅴ
[单选题]保证增压器转子受热膨胀不会产生压气机叶轮与气封板碰撞的间隙是()值。
M
[单选题]油润滑艉轴承首端密封的作用是()。
防止滑油漏入机舱
[单选题]A level gauge for a tank is to ().
give the contents
[单选题]The efficiency of turbocharge system is increased by fitting a charge air cooler () the compressor.
after
[单选题]The process to remove exhaust gases by blowing in fresh air is called ().
scavenging
[单选题]Which of the combustion parameters listed is used in a diesel engine, but NOT related to the injection system?()
Effective stroke
[单选题]A fuel-air mixture below the lower explosive limit is too().
lean to burn