[单选题]A lubricant often has to perform many duties in any situation, in addition to its fundamental job of （）.A . resisting oxidizationB . reducing frictionC . promoting moving speedD . developing inertia
[问答题] 怎样判断主轴承高、低？
[单选题]All the rings are slightly rounded on their external top and bottom edges to keep the oil film on the cylinder liner during （） for new piston rings.A . the running-in periodB . the running processC . gas exchange processD . the boiler firing
[单选题]A distance piece, with ground faces, may be interposed between the rod and the bearing housing, its thickness being chosen to ensure the correct （）.A . expansion ratioB . pressure ratioC . compression ratioD . clearance ratio
[单选题]（） are commonly used in mechanical-hydraulic governor（调速器） to sense engine speeds.A . BulbsB . BulksC . FlyweightsD . Flywheel
[单选题]（） is the removal of exhaust gases by blowing in fresh air.A . Gas exchangeB . ChargingC . ScavengingD . Supercharging
[问答题] 如何正确使用液压拉伸器？
[单选题]螺旋桨经修理后应进行（）和（）检验。A . 动平衡/螺距B . 静平衡/运转C . 动平衡/运转D . 静平衡/螺距
[单选题]螺旋桨修理后的半径和各种螺距的偏差值应符合标准，偏差值是指（）之差。A . 设计值与计算值B . 实测值与计算值C . 设计值与实测值D . 理论值与实测值
[单选题]桨叶经焊补修理后，为保证焊补质量应进行（）等处理。Ⅰ.磨光；Ⅱ.着色探伤；Ⅲ.测螺距；Ⅳ.静平衡试验；Ⅴ.退火。A . Ⅱ＋ⅢB . Ⅰ＋Ⅱ＋ⅤC . Ⅲ＋Ⅳ＋ⅤD . Ⅰ＋Ⅱ＋Ⅲ＋Ⅳ
[单选题]A governor automatically controls engine speed by regulating （）.A . fuel supplyB . firing orderC . engine loadD . oil level
[单选题]A （）is the foundation of the engine, without the support of which the shaft alignment in particular, and engine structure as a whole, would inevitably be lost.A . FrameB . BedplateC . CylinderD . Liner
[问答题] 柴油机吊缸后，装配时应注意些什么？
[问答题] 船上常用的柴油机单缸停油措施？
[单选题]（） rods are not in proper condition so that too much fuel is supplied to the corresponding cylinder.A . PistonB . SoundingC . RegulatingD . Connecting
[单选题]除镍铝青铜桨外，其他材料的螺旋桨桨叶热校正之后应进行（）处理。A . 着色探伤B . 静平衡C . 退火D . 清洁
[单选题]“Stand by an engine” means （）A . “prepare to stop the engine”B . “assemble an engine on its bedplate”C . “make an engine ready for starting”D . “dismantle an engine&rdquo
[单选题]A: Please tell me the specifications and quantity.B: （）A . Pump diesel oil firstB . 300 tons of 180 cst fuel oilC . The figure is all rightD . OK, I’ll sign it
[单选题]舵承孔同轴度偏差过大时，可采取（）措施。A . 更换舵承衬套B . 偏镗舵承孔衬套C . 衬套需可靠定位以防转动D . 镗削全部舵承衬套
[单选题]四冲程柴油机停增压器运转，相当于非增压柴油机，但此时工作的主要问题是（）。A . 气阀重叠角较小，排气不畅B . 气阀重叠角较大，排气不畅C . 气阀重叠角较小，排气倒流D . 气阀重叠角较大，排气倒流
[单选题]螺旋桨桨叶变形后，除经校正修理使之符合叶形要求外，还应进行（）处理。Ⅰ.修整磨光；Ⅱ.着色探伤；Ⅲ.测螺距；Ⅳ.静平衡试验；Ⅴ.退火。A . Ⅰ＋ⅡB . Ⅰ＋Ⅱ＋Ⅳ＋ⅤC . Ⅲ＋Ⅳ＋ⅤD . Ⅰ＋Ⅱ＋Ⅲ＋Ⅳ
[单选题]四冲程柴油机停增压器运转产生的主要问题是（）。A . 无法换气B . 排气倒流C . 振动强烈D . 喘振
[单选题]桨叶上同一半径截面上的局部螺距的算术平均值称为该截面的（）螺距。A . 总B . 截面C . 平均D . 桨叶
[单选题]Bedplates are the （） of the engine, without the support of which the shaft alignment in particular, and engine structure as a whole, would inevitably be lost.A . hullB . projectionC . graphitizationD . foundatio
[单选题]操舵轻快、航向失控的原因可能是（）。Ⅰ.舵承配合间隙过大；Ⅱ.舵承损坏；Ⅲ.舵叶丢失；Ⅳ.舵杆折断；Ⅴ.舵承的摩擦力小。A . Ⅰ＋ⅡB . Ⅰ＋Ⅳ＋ⅤC . Ⅱ＋Ⅳ＋ⅤD . Ⅲ＋Ⅳ
[单选题]舵杆轴颈表面腐蚀面积＞25%总面积时，应进行（）。A . 堆焊后光车B . 光车后镀铬C . 热喷涂后光车D . 光车后镀铁
[问答题] 测量曲轴臂距差的条件和要求是什么？
[单选题]滑油系统预热的方式有（）。Ⅰ.蒸汽加热；Ⅱ.电加热；Ⅲ.分油机分油加热；.Ⅳ.热水加热A . Ⅰ+ⅡB . Ⅰ+ⅣC . Ⅰ+ⅢD . Ⅰ+Ⅲ+Ⅳ
[单选题]（） are generally formed in the frame of the both in-line and Vee engines to give maintenance access to the crankshaft main and connecting rod large end bearing.A . DoorsB . Aspirate gauzerC . CouplingD . Blind
[单选题]螺旋桨桨叶变形较小时采用（）法校正。A . 冷态校正B . 热态校正C . 机械校正D . 加热-机械校正