[单选题]螺旋桨桨叶B区内的较小缺陷,深度<t为/30(t为叶厚,mm)或3mm可以采用()其中较大的缺陷。A . 修磨B . 焊补C . 粘接D . 金属扣合工艺
[问答题] 有哪些因素会造成轴瓦的过度磨损?
[单选题]某螺旋桨半径为2m,在其中一桨叶上0.3R、0.6R、0.9R处各旋转36°时分别测得量杆的升程为256mm、252mm、260mm,请问其0.3R处的局部螺距为()。A . 256mmB . 2560mmC . 252mmD . 1780mm
[单选题]柴油机在下述()情况下不需要停增压器运转。A . 增压器轴承损坏B . 增压器转子叶片大量断裂C . 增压器严重喘振D . 增压器不能工作
[单选题]A common trouble with the fuel pump plunger or fuel valve spindle is ().A . water leakageB . steam leakageC . oil leakageD . air leakage
[单选题]如果发生增压器损坏,而柴油机又不允许停车,应采取的应急措施是()。A . 锁住转子B . 拆除转子C . 带故障增压器短时运行D . A+B
[单选题]热校正舵杆时,加热温度一般不超过()℃。A . 550B . 650C . 750D . 850
[单选题]平板形舵可作成()。Ⅰ.平衡舵;Ⅱ.穿心舵轴平衡舵;Ⅲ.半平衡舵;Ⅳ.不平衡舵;Ⅴ.完全平衡舵。A . Ⅰ+ⅡB . Ⅰ+Ⅳ+ⅤC . Ⅲ+Ⅳ+ⅤD . Ⅰ+Ⅲ+Ⅳ
[单选题]二冲程柴油机停增压器运转时使用电动鼓风机供气,此时柴油机可达到标定功率的()。A . 20%B . 25%C . 30%D . 35%
[单选题]备车的正确理解是()。Ⅰ.保证船舶开航;Ⅱ.保证船舶机动航行;Ⅲ.保证船舶动力装置及设备处于随时可启动和运行A . Ⅰ+ⅡB . Ⅰ+ⅢC . Ⅱ+ⅣD . Ⅰ+Ⅱ+Ⅲ
[问答题] 为什么要检查测量曲轴臂距差?
[单选题]An electrically driven automatically operating auxiliary blower is provided for slow speed and () of a low speed diesel engine.A . manoeuvring operationsB . bad combustionC . coolingD . mooring trial
[单选题]螺旋桨各桨叶平均螺距的算术平均值称为()螺距。A . 螺旋桨B . 螺旋桨总平均C . 螺旋桨桨叶平均D . 螺旋桨设计
[单选题]() for the camshaft gear train is taken from a spur gear which for a six cylinder engine is at the coupling end.A . The driven gearB . The driveC . The greaseD . The lubricating oil
[单选题]As the plunger moves up, the ports are closed and the fuel () and delivered to the injector nozzle at very high pressure.A . being compressedB . to be pumped upC . is pressurizedD . are built u
[单选题]舵角指示器正常时,转舵不准,舵角不正,正舵时舵角不在零位的原因主要是()造成。Ⅰ.舵机故障;Ⅱ.舵杆弯扭变形;Ⅲ.舵杆安装不良;Ⅳ.舵安装时没对准零位;Ⅴ.舵机功率不足。A . Ⅰ+ⅡB . Ⅰ+Ⅳ+ⅤC . Ⅱ+ⅣD . Ⅰ+Ⅲ+Ⅳ
[单选题]Because the castings of smaller engines are not so big and heavy, () and cylinder block may be made in one piece.A . the columnB . the jacketC . cylinder coverD . cylinder liner
[单选题]An interlock in the remote operating valve line stops the valve () when the engine turning gear is engaged.A . to openB . openingC . openD . opened
[单选题]螺旋桨C区内的缺陷采用()工艺进行修理。A . 不可焊补B . 焊补C . 有机胶黏剂粘补D . 修磨
[单选题]A distance piece, with ground faces, known as a compression plate, may be interposed between the rod and the beating housing, its thickness being chosen to ensure the correct ().A . compression pressureB . compression testC . compression ratioD . com
[单选题]为了检验螺旋桨的螺距,关键是应测量计算出()螺距。A . 局部B . 截面C . 桨叶平均D . 螺旋桨总平均
[单选题]舵系固定件的舵承孔同轴度检验采用()方法。A . 拉线法B . 光学仪器法C . 专用量具D . 不一定
[单选题]暖机主要工作是()。Ⅰ.冷却系统预热;Ⅱ.润滑系统预热;Ⅲ.燃油系统预热;Ⅳ.启动空气预热A . Ⅰ+Ⅱ+ⅢB . Ⅰ+Ⅱ+ⅣC . Ⅰ+Ⅲ+ⅣD . Ⅱ+Ⅲ+Ⅳ
[单选题]局部螺距等于()(ΔL为螺距规量杆的升程α为螺距规水平杆转过的角度)。A . 360•ΔL/αB . ΔLα/360C . 360/ΔLαD . α/ΔL360
[问答题] 柴油机吊缸时,对气缸盖应做哪些检查?
[单选题]转舵时声音异常可能是()。A . 舵承间隙过大B . 舵承间隙过小C . 舵杆变形D . 舵杆折断
[单选题]“Before disconnecting the oil pipe, would you flush the oil retained in the pipe?” asked the oil barge owner ()A . by using of fresh waterB . with compressed airC . by using of sea waterD . with chemical compound
[单选题]按舵的旋转轴线的位置不同,将舵系分为()。Ⅰ.平衡舵;Ⅱ.穿心舵轴平衡舵;Ⅲ.半平衡舵;Ⅳ.不平衡舵;Ⅴ.完全平衡舵。A . Ⅰ+ⅡB . Ⅰ+Ⅳ+ⅤC . Ⅲ+Ⅳ+ⅤD . Ⅰ+Ⅲ+Ⅳ