【名词&注释】
工作面(face)、冷却水(cooling water)、增压器(turbocharger)、二冲程(two-stroke)、中国船级社(china classification society)、符合要求(meet the requirement)
[单选题]二冲程十字头式柴油机活塞运动部件纵向校中的目的是使活塞与气缸套在()方向的间隙符合要求(meet the requirement);导板和滑块之间的()间隙符合要求(meet the requirement)。
A. 首尾/侧面
B. 首尾/工作面
C. 左右/工作面
D. 左右/侧面
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学习资料:
[单选题]中国船级社(china classification society)允许船舶曲轴臂距差的最大极限是()mm(S为冲程,单位:mm)。
A. <0.125S
B. (0.125~0.25)S
C. <0.25S
D. <0.30S
[单选题]对传动轴系理解正确的是()。Ⅰ.长轴系刚性好,对偏差敏感;Ⅱ.短轴系挠性好对偏差不敏感
A. 仅Ⅰ对
B. 仅Ⅱ对
C. Ⅰ+Ⅱ
D. Ⅰ,Ⅱ都不对
[单选题]柴油机停增压器运转后,应使()。
A. 冷却水继续流通,仍保持滑油的循环
B. 冷却水和滑油均应停掉
C. 冷却水继续流通,滑油应停掉
D. 冷却应停掉,滑油仍继续循环
[单选题]A common trouble with the fuel pump plunger or fuel valve spindle is ().
A. water leakage
B. steam leakage
C. oil leakage
D. air leakage
[单选题]The compressed air is supplied by () to the air reservoirs.
A. compressors
B. forced fans
C. ventilators
D. generator
[单选题]Which of the following methods is normally used to lubricate bearings in a small high-speed diesel engine?()
A. Splash lubrication
B. Pressure lubrication
C. Sight feed lubricators
D. Mechanical lubricator
[单选题]Which of the following conditions may need to be reduced when operating a large, low speed, main propulsion, diesel engine at low loads?()
A. Injection pressures
B. Control air supply pressure
C. Cooling water flow through after-coolers
D. Lube oil temperature
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