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  • Aluminum pistons have () coefficient of thermal expansion

    Aluminum pistons have () coefficient of thermal expansion compared with those of cast iron.船舶动力装置基本性能指标中的单位重量是指()。Ⅰ.主机单位有效功率的主机总重量;Ⅱ.主机单位有效功率的动力装置
  • An electrically driven automatically operating auxiliary blo

    An electrically driven automatically operating auxiliary blower is provided for slow speed and () of a low speed diesel engine.船上吊缸检修一般不必()。柴油机各道主轴承下瓦磨损不同,使曲轴轴线状态产
  • All three systems have the ports () to swirl the incoming

    All three systems have the ports () to swirl the incoming air and direct it in the appropriate path.在有充分氧气存在时,烟垢的可燃成分在高温下自由蒸发,被火花或火焰点燃,在废气锅炉烟道内保持小范围和有
  • After the engine is warned, we should() the turning gear b

    After the engine is warned, we should() the turning gear before starting up the engine.水润滑艉轴承填料函中的填料为()。It is very necessary that each cylinder () before the charged air is compre
  • Among the rings of a piston the () one is subjected to the

    Among the rings of a piston the () one is subjected to the greatest load and temperature.不允许柴油机排气恶化,防止锅炉烟垢沉积,其措施是()。当气缸内径增量超标时,应选用()进行修理。Ⅰ.镀铬;Ⅱ.镀铁;
  • Administrations should bear in mind the significance of ()

    Administrations should bear in mind the significance of () in maintaining safety of life and property at sea and in preventing marine pollution.可靠度将可靠性具体化、定量化,不能采用的是()。船舶动
  • A: Please tell me the specifications and quantity.B: ()

    A: Please tell me the specifications and quantity.B: ()Pistons of marine medium speed diesel engines may be made of () in order to keep the weight down for balancing purpose at high speed.The cyli
  • After ensuring that the () is correct the bearing clearanc

    After ensuring that the () is correct the bearing clearance should be checked.舵系校中检测的项目中()是错误的。A variable pitch propeller is made () a boss with separate blades mounted into it.Th
  • A-frames are mounted on the bed plate and support () and c

    A-frames are mounted on the bed plate and support () and cylinder block.在有充分氧气存在时,烟垢的可燃成分在高温下自由蒸发,被火花或火焰点燃,在废气锅炉烟道内保持小范围和有限的火源,称为()。换新十字头
  • Acid solution() in the system can be tested from time to t

    Acid solution() in the system can be tested from time to time by putting some on to a piece of lime.()时应对增压器转子进行动平衡试验。相邻轴同轴,其连接法兰处偏中值为()。中间轴承的工作轴颈一般较
  • After "F.W.E" is given, the air system is shut down, the (

    After "F.W.E" is given, the air system is shut down, the () gear put in, all drains and indicator cocks opened, and the cooling water kept running.桨叶经焊补修理后,为保证焊补质量应进行()等处理。Ⅰ.
  • According to the way the energy of the exhaust gases is util

    According to the way the energy of the exhaust gases is utilized, pressure-charging can be divided into two main systems, namely, the constant-pressure system and ().MANB&W5S60型船用柴油机气缸套
  • A-frames and cylinder block is held together by () to form

    A-frames and cylinder block is held together by () to form a rigid structure.船舶动力装置的管路系统,按用途不同可分为()类,即()。故障率λ(t)是针对到时刻t尚能正常工作的产品数而言的;().Ⅱ.密度函
  • Adjust () by means of lead wire.

    Adjust () by means of lead wire.柴油机进行横向校中只适用于()柴油机。Smaller engines can be made more rigid than large ones and may not have ().The period of valve overlap is when ().Which of t
  • Additives () protective layers on metal surfaces guarding

    Additives () protective layers on metal surfaces guarding them against corrosion.气缸套内圆表面采用()加工,是防止拉缸事故的工艺措施之一。Ⅰ.珩磨;Ⅱ.振动;Ⅲ.机械;Ⅳ.波纹;Ⅴ.磨削。涡轮壳体局部腐蚀较重
  • About half an hour before the engine is required, cooling wa

    About half an hour before the engine is required, cooling water at () must be circulated.废气锅炉出口排烟温度t2不应低于露点,为了最大限度利用排气余热,在标定工况下,t2=露点+△t(℃),式中△t不应小于()℃.
  • After fitting back in place the gear wheels, dont forget (

    After fitting back in place the gear wheels, dont forget () them.针阀体的喷孔磨损后使孔径增大()时需要换新针阀体。消除螺旋桨鸣音的方法是()。The hot expanding gas rotates the blades of the exhaust
  • A high temperature alarm or () which will melt is used to

    A high temperature alarm or () which will melt is used to guard against the explosion of compressor air pipelines.现代柴油机为使与其匹配的废气锅炉被设计得更加高效,应包括()。Ⅰ.利用大的受热面;Ⅱ.锅
  • 海船船员考试题库2022船舶动力装置题库模拟在线题库299

    已知某船排水量为2O000t,主机有效功率为10O00kW,主机重量为350t,动力装置总重量为8O0t,则该船主机单位重量为()kg/kW。劣质渣油中含有(),使用中使烟灰增加且具有粘性,是烟灰发生沉积的重要原因()。Ⅰ.灰分;Ⅱ.残
  • A level gauge for a tank is to ().

    A level gauge for a tank is to ().体现主机紧急倒车性能的指标是()。The operating diesel generators will have their exhaust temperatures, cooling water and lubricating oil temperatures and pressures
  • A gudgeon pin in a trunk piston may be free to float and rot

    A gudgeon pin in a trunk piston may be free to float and rotate, with () to limit axial movement.在检查()的连杆大端轴承螺栓时,必须测量螺栓的拉伸长度。The lubricating system for the cylinder walls
  • A hot air start pipe indicates that there is ().

    A hot air start pipe indicates that there is ().航行中一旦发现增压器振动,则首先应该()。目前钢质海船建造时安装的轴系广泛采用()。铁梨木轴承产生()时应予以部分或全部换新。舵系中心线与轴系中心线应
  • A single piece() fitted with bronze rings guides the pisto

    A single piece() fitted with bronze rings guides the piston in the cylinder liner.在船上拆卸下列中、低速柴油机的螺栓时可能使用液压拉伸工具()。Ⅰ.底脚螺栓;Ⅱ.贯穿螺栓;Ⅲ.气缸盖螺栓;Ⅳ.主轴承螺栓;Ⅴ.
  • A governor automatically controls engine speed by regulating

    A governor automatically controls engine speed by regulating ().串联系统的部件数目n与工作时间t都影响系统的可靠性()。Ⅰ.串联部件越多,系统可靠性越差;Ⅱ.工作时间越长,系统的可靠性越差艉轴密封装置的橡胶
  • A heater in the circuit facilitates warning of the engine pr

    A heater in the circuit facilitates warning of the engine prior to () by circulating hot water.船舶动力装置的管路系统,按用途不同可分为()类,即()。大量产品的故障率随时间变化的规律曲线[λ(t)-t)]
  • A lubricant often has to perform many duties in any situatio

    A lubricant often has to perform many duties in any situation, in addition to its fundamental job of ().关于废气锅炉烟垢着火温度()。Ⅰ.烟垢潜在着火温度一般为300—400℃;Ⅱ.存在未燃烧的燃油时烟垢着火温
  • A main bearing consists of two shells which are secured by m

    A main bearing consists of two shells which are secured by means of studs and ().采用尺寸选配法修理柱塞偶件或针阀偶件时,下列正确说法是()。It is very important that each cylinder should be () sca
  • A separate piston cooling system is used to limit any contam

    A separate piston cooling system is used to limit any contamination () piston cooling glands() the piston cooling system only.船舶动力装置往往以推进装置的类型进行分类,可分为()。Here some oil in
  • A variable pitch propeller is made () a boss with separate

    A variable pitch propeller is made () a boss with separate blades mounted into it.对筒状活塞式柴油机,在未装活塞环的条件下,活塞位于近上、下止点位置时,活塞裙部与气缸内孔单边最小间隙应不小于()。用液
  • A distance piece, with ground faces, may be interposed betwe

    A distance piece, with ground faces, may be interposed between the rod and the bearing housing, its thickness being chosen to ensure the correct ().某些新型大型低速柴油机的气缸盖上,设有用来拆卸缸盖
  • 船舶动力装置题库试题答案+解析(10.27)

    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。Excessive alkalinity of the water in an auxiliary boiler can cause ().总 截面# 平均 桨叶caustic embrittlement of the boiler metal# aci
  • A distance piece, with ground faces, known as a compression

    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 ().早期故障是在使用开始
  • 船舶动力装置题库2022人机对话每日一练(10月27日)

    液压拉伸器是利用油压使螺栓()后轻易地上紧或松脱螺栓。一般情况下,要求针阀的锥角较阀座的锥角大()。按轴承允许负荷校中时,下述正确的是()。船轴腐蚀主要发生在()。The indications of a scavenge fire are
  • 海船船员考试题库2022船舶动力装置题库考试试题试卷(0AD)

    保证柴油机运动部件与固定件的准确相对位置,实质上是要()。对于质量分布不在同一平面内,轴向长度较大的回转件,其平衡程度用()表示。Storage batteries on T-Boats must be located().配合间隙符合要求 保证两
  • A number of cylinder liners are enclosed in one cast iron ca

    A number of cylinder liners are enclosed in one cast iron casing to form a ().由于船舶的特殊性,导致了可靠性研究方法,如()。Ⅰ.15钢;Ⅱ.45钢;Ⅲ.20Cr;Ⅳ.40Cr;Ⅴ.35CrMo。测量轴系中心线同轴度偏差,可采用
  • () or air venting arrangement is fitted to the fuel supply

    () or air venting arrangement is fitted to the fuel supply passage.6250型船用柴油机气缸套最大内径增量为1.5mm,则最大缸径为()。当柴油机气缸套产生较大拉痕、擦伤、磨台和过度磨损时,应拆下送厂采用()进
  • () neutralizes the acid conditions and() cleanses the ri

    () neutralizes the acid conditions and() cleanses the rings and grooves.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。Failure of fue
  • A diesel engines crankcase oil level is found to be too high

    A diesel engines crankcase oil level is found to be too high√ You should suspect that ().废气涡轮增压器使柴油机的功率增加一倍,而重量只增加()。Sediment collects in a tubular purifier ().The cast
  • () the engines, the diesel engine is() used engine on bo

    () the engines, the diesel engine is() used engine on board.可靠性对船舶动力装置具有特别重要的意义,可靠性不足会()。废气锅炉窄点越(),锅炉受热面就越(),藜发量越()。目前国内外均以(S+D)/2为
  • () for the camshaft gear train is taken from a spur gear w

    () for the camshaft gear train is taken from a spur gear which for a six cylinder engine is at the coupling end.指出下述哪一项不是船舶动力装置的重量性能指标()。超级汽轮发电系统(STG)是废热利用联
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