【名词&注释】
利用率(utilization ratio)、增压器(turbocharger)、蒸发器(evaporator)、给水预热器(feed unit water preheater)、工作情况(working condition)
[单选题]十字头式柴油机活塞与气缸间隙是指在一定条件下,活塞()与气缸内孔()间隙。
A. 裙部/两边最小
B. 裙部减摩环/单边最小
C. 裙部刮油环/两边最大
D. 头部/单边最大
查看答案&解析
查看所有试题
学习资料:
[单选题]对于废气锅炉窄点不正确的表述是()。
A. 废气锅炉窄点是废气与饱和蒸汽之间的最小温度差
B. 废气锅炉窄点是废气离开蒸发器时的温度和饱和蒸汽之间的温度差
C. 锅炉窄点是可以用来表示废气锅炉给水预热器的工作情况(working condition)
D. 窄点是可以用来表示废气锅炉利用率的一个参数
[单选题]航行中一旦发现增压器振动,则首先应该()。
A. A.停机检修
B. B.查明原因
C. C.降低转速
D. D.锁住转子
[单选题]Each cylinder liner on the marine medium speed engines ().
A. is usually cooled by sea water
B. can be replaced when worn out
C. is in direct contact with the water in the bore of the cylinder
D. can t expand when heated
[单选题]The main function of tie rods in the construction of large, low speed diesel engines is to().
A. stiffen the bedplate in way of the main bearings to increase the engines longitudinal strength
B. accept most of the tensile loading that results from the firing forces developed during operation
C. mount the engine frame securely to the hull to prevent shaft coupling misalignment
D. connect the crosshead solidly to the piston rod
本文链接:https://www.51bdks.net/show/kd7x9d.html