[单选题]（） the engines, the diesel engine is（） used engine on board.A . Between；more commonlyB . Among；the most commonlyC . Between；not more commonlyD . Among；not the most commonly
[问答题] 怎样正确测量曲轴轴颈的磨损？
[问答题] 造成柴油机活塞在气缸中前后失中的原因是什么？
[问答题] 船舶航行中，怎样进行柴油机的运行管理？
[问答题] 柴油机拉缸时会有哪些征兆？
[单选题]（） in what position the engine stops there will always be at least one of the cylinders with its starting air valve open to admit compressed air to start the engine.A . BecauseB . Owing toC . ForD . No matter
[单选题]Bearing knocks are likely to occur from （）.A . less clearanceB . dirty lube oilC . overloadD . bearing wear
[单选题]（） fuel oils （） lubricating oils require treatment before passing to the engine.A . Both；andB . Neither；norC . Either；orD . Both；or
[单选题]上舵承一般常采用（）。A . 铁梨木滑动轴承B . 白合金滑动轴承C . 滚动轴承D . 整体衬套式轴承
[单选题]局部螺距是桨叶上（）的螺距。A . 任意半径截面上任意角度的B . 任意半径截面上任意角度的螺距平均值C . 根据任意半径截面上任意角度的部分螺距计算出D . 任意半径截面上任意角度的部分螺距的平均值
[单选题]（） of the A-frames there is a strong cast iron frame called the scavenging air box.A . At the topB . At the bottomC . In the topD . In the bottom
[单选题]螺旋桨修理后，除对修理质量进行检验外，还应进行（）检验。Ⅰ.叶形修理；Ⅱ.尺寸；Ⅲ.测螺距；Ⅳ.静平衡试验；Ⅴ.无损探伤。A . Ⅰ＋ⅡB . Ⅰ＋Ⅱ＋Ⅳ＋ⅤC . Ⅲ＋ⅣD . Ⅱ＋Ⅲ＋Ⅳ
[单选题]舵杆工作表面过度磨损可以采用（）修复。A . 光车B . 堆焊后光车C . 喷涂后光车D . 镀铬
[单选题]Before "stand-by" is rung on the engine telegraph, it is usual to give the main engine （） ahead and astern.A . a brief trial with turning gearB . a brief trial on powerC . a long trial by steering gearD . one minutes trial with windla
[单选题]舵系校中检测的项目中（）是错误的。A . 舵系固定件的同轴度检验B . 舵系运动件的同轴度检验C . 舵系中心线与轴系中心线的同轴度检验D . 舵系中心线与轴系中心线位置度检验
[单选题]A cast steel strong back is fitted in way of the combustion space to help absorb （）.A . flame temperatureB . fuel oilC . air movementD . gas force
[单选题]Adjust （） by means of lead wire.A . the clearance of the main bearingB . the diameter of main bearingC . the gap of main beatingD . the tolerance of main bearing
[单选题]A-frames and cylinder block is held together by （） to form a rigid structure.A . connecting rodsB . piston rodsC . tie rodsD . jack-bolt
[单选题]舵系固定件的中心线与船舶基线垂直，垂直度偏差不大于（）。A . 0.5mm/mB . 1.0mm/mC . 1.5mm/mD . 2.0mm/m
[单选题]一般（）为双舵双桨。A . 远洋及近海商船B . 客船和军舰C . 内河中、小船舶D . 远洋考察船
[单选题]（） allows for expansion and water make up in the water cooling system.A . A top tankB . A head tankC . A head valveD . A drain tank
[单选题]Aluminum pistons have （） coefficient of thermal expansion compared with those of cast iron.A . higherB . lowerC . the sameD . none of the above
[问答题] 扫气箱着火时应采取怎样措施？
[单选题]After ensuring that the （） is correct the bearing clearance should be checked.A . napB . gapC . nipD . deflectio
[单选题]（） provide the water to the pistons.A . Pneumatic pipesB . Hydraulic pipesC . Telescopic pipesD . Operating gas pipe
[单选题]After the engine is warned, we should（） the turning gear before starting up the engine.A . take inB . put inC . take outD . put u
[问答题] 修理气缸套磨损有那些方法？
[单选题]A heater in the circuit facilitates warning of the engine prior to （） by circulating hot water.A . startingB . stoppingC . to startD . to sto
[单选题]A gudgeon pin in a trunk piston may be free to float and rotate, with （） to limit axial movement.A . split pinsB . crankpinsC . dipsticksD . circli
[单选题]螺旋桨桨叶上的缺陷采用焊补修理后应进行（）和（）处理。A . 正火/质量检验B . 质量检验/退火C . 探伤/静平衡D . 探伤/测螺距