正确答案: D

The piston movement

题目:() usually helps to induce air movement to assist combustion.

查看原题 查看所有试题

学习资料的答案和解析:

  • [单选题]当十字头式柴油机缸径<700mm时,在未装活塞环的条件下,活塞位于近上、下止点位置时,活塞裙部减磨环与气缸内孔单边最小间隙应不小于()。
  • 该处总间隙的30%


  • [单选题]短轴系具有()的特点,所以目前造船趋势大都采用艉机舱或近尾机舱。Ⅰ.结构简单;Ⅱ.便于管理;Ⅲ.便于船舱布置;Ⅳ.节省造船费用;Ⅴ.中间轴数量少。
  • Ⅰ+Ⅱ+Ⅴ


  • [单选题]Each cylinder liner on the marine medium speed engines ().
  • can be replaced when worn out


  • [单选题]The mechanical efficiency of an engine () because losses occur in the form of friction.
  • is always less than 100%


  • [单选题]The temperature difference between the inlet and outlet temperature of the lube oil cooler in the lubricating system for the diesel engine is generally between ().
  • 8-10℃


  • [单选题]In a large, slow-speed, main propulsion diesel engine, which of the parts listed is under tension when the engine is running?()
  • Tie rod


  • 推荐下载科目: 船舶正弦交流电题库 轮机船舶管理题库 船舶适航性控制题库 柴油机主要零件的检修题库 航海学题库 船舶辅机知识题库 船舶操纵与避碰(大副)题库 船舶空气调节装置题库 船舶海水淡化装置题库 定期船运输题库
    @2019-2025 必典考网 www.51bdks.net 蜀ICP备2021000628号 川公网安备 51012202001360号