轮机英语【二三管】

考试试题

[单选题]In fighting a fire in a fuel tank , the FIRST action you should attempt is to ____

[单选题]Before performing any maintenance on a hydraulic system storing energy in an accumulator, you should___.

[单选题]Which of the following would not be burnt in an incinerator (not ratified by IMO)on board?

[单选题]While on watch in the engine room, you hear a continuous sounding of the general alarm. Which of the following actions should you take?

[单选题]The overcurrent relay ____the motor contractor when the motor exceeds its rated current.

[单选题]If the bowl of disk type centrifugal purifier when operate as a separator is not primed, the__________.

[单选题]The cetane rating of diesel fuel is an indication of the_____

[单选题]When securing a flash-type evaporator for an extended period of time, you should_____

[单选题]Generally, we treat the __________ layer of a bilge water holding tank by skimming脱脂的; 撇去浮沫的

[单选题]The clutch band of a constant tensioning mooring winch must be set up tight enough to drive the winch drum and should slip only when______

[单选题]Which of the following problems could develop due to the accumulation of oil vapors in the crankcase of a diesel engine?

[单选题]In ________the control action is independent of the output.

[单选题]Reheating hardened component to a temperature lower than the hardening temperature and then cooling it is known as _____

[单选题]switchboards may be of the dead-front type in which all live parts are installed behind后面 ____ and only the operation handles and instruments are on the front.

[单选题]Coalescence is the breakdown of surface tension between oil droplets in an oil/water mixture, which causes them to join and ( )in size.

[单选题]Dual electro-hydraulic steering units usually operate_____.

[单选题]If you install a new hydraulic hose in a hydraulic system, the hose must be long enough to allow for contraction to prevent______

[单选题]With___, the engine need not to be aligned with reduction gears or propeller shaft .

[单选题]_____are to be carried out on all ships instead of the second or third annual survey within 3 months, before or after either one of the anniversary date, after completion, commissioning or special survey, as appropriate.

[单选题]In a refrigeration system, foaming of the crankcase oil may cause the ___.

[单选题]A gearbox is used______in a ship driven by a medium-speed diesel engine

[单选题]When a refrigeration compressor motor fails to start, the FIRST thing that should be checked for is a_______

[单选题]In a fixed displacement axial piston hydraulic motor, the speed is varied by _____

[单选题]In an four-stroke engine the camshaft rotates at

[单选题]which is not correct about the advantage of the distribution box?

[单选题]______is not a part of the main switchboard on board .

[单选题]The International Oil Pollution Prevention Certificate is valid for a period of______

[单选题]for crash maneuvers the lever is moved from one extreme to the other, the sequence is _______.

[单选题]The opening of the humidifier’s valve of air-conditioner should be _______??when the circumstance temperature is lower than 0℃

[单选题]The treatment of the fuel oils involves storage, heating, filtering and ________.

[单选题]Diesel engine are remarkably simple in principle and require little in way of________, although what little is required is essential to a long life.

[单选题]In the event of a sm all bunker oil spill on deck occurring while bunkering, you should____

[单选题]Which of the following problems may be encountered by using an oil having a viscosity high than that specified for an operating hydraulic system?

[单选题]Which of the equipment listed is most effective in processing bilge slops for overboard discharge?

[单选题]The correct tightening is obtained by the use of ____ to measure the extension given to the bolts

[单选题]A liquid boils and condenses the change between the liquid and gaseous state at a temperature which depend on its _____ within the limits of its freezing point and critical temperature.

[单选题]Because the electronic governor controller is a sensitive piece of electronic equipment and should not be mounted on the engine or in areas where it will be exposed to ___.1 Vibration???2 Humidity???3High temperature???4 Oxygen

[单选题]Remote control means that ______.

[单选题]When fighting a spreading fire resulting from a broken fuel line, you should FIRST

[单选题]When securing a flash-type evaporator for an extended period of time,you should

[单选题]The main purpose of warming up the main engine is____.

[单选题]Which of the following statements is true concerning carbon dioxide when used as a fire extinguishing agent?

[单选题]Increasing the temperature of a fuel will ________ its viscosity, and vice vers

[单选题]If the centrifugal pump operating with a positive suction head becomes air bound, your first response should be to_____

[单选题]In a single acting .two--stroke/cycle , diesel engine ,the power impulse in an individual cylinder occurs___.

[单选题]In the refrigeration system, a shortage of refrigerant is indicated by _____.

[单选题]Efficient bilge water treatment will contribute to the following except _____

[单选题]The officer in charge of the engine watch in port may not ____

[单选题]n chemical sewage treatment system , tests must be performed ___to check the chemical dosage rates .

[单选题]When exercising port state control, all possible efforts should be made to _____

[单选题]What is the ultimate purpose of requirements covering machinery and electrical installations?

[单选题]The amount of fuel delivered by a unit injector is controlled by the ______

[单选题]During oil transfer operations, who would be responsible to guarantee that the posted procedures are being followed?

[单选题]if the water level cannot be seen in the lower part of the boiler gauge glass, which of the following actions must be carried out immediately?

[单选题]The _____ of a ship is not normally used to indicate the size of a ship, whereas the ______, based on the ship’s loading capacity, including fuel and lube oils etc. for operation of the ship, measured in tons at scantling draught, often is. 重量轻的船通常并不是用来表示大小的船,而无谓,根据船舶的装载能力,包括船舶的燃料和润滑油油等操作,以吨材料尺寸吃水,通常都是如此。

[单选题]A constant hissing sound一个恒定的嘶嘶声 at the thermal expansion valve will always indicate____

[单选题]The saturation temperature changes with___.

[单选题]Flexible hose under pressure in a hydraulic system will________.

[单选题]In a ordinary cargo crane,____ is fitted to rotate the crane.

[单选题]The purifier vibrates excessively. Which of the following causes is wrong?

[单选题]According to what is the cargo handling equipment rated?

[单选题]According to STCW CODE, an engineer officer must possess which of the following functions?

[单选题]The separating effect of oil separator is not very good, the reason may be _____ 。

[单选题]A fire involving trash and paper waste would be classified as a ____.

[单选题]When pumping down an air conditioning system to test the low pressure cutout switch, you should _____

[单选题]Fuses placed in series with a thermal trip-type circuit breaker are used for____.

[单选题]Particulate matter(PM)is a complex mixture of inorganic无机 and organic 有机compounds resulting from ____, partly unburned lube oil, thermal splitting of HC from the fuel and lube oil,ash in the fuel and lube oil,sulphate and water.

[单选题]Centrifugal separators can be ?arranged ______to attain a higher throughput

[单选题]The starting air system of an engine on board usually has interlocks in order to _____.

[单选题]______speed engines operate in speed ranges from 300 to 1000 rpm.

[单选题]In order to reduce the chance of detentions ships should routinely verify the following except for ____.

[单选题]From _____the preheated fuel is led to the settling tank

[单选题]In common rail engines, the fuel is ____ before is injected into the cylinders、

[单选题]_____fuel oils _____ lubricating oils require treatment before passing to the engine.

[单选题]oil mist detectors are usually used on board to detect oil mist density within______

[单选题]The company should establish in the SMS that ____has the overriding authority and the responsibility to make decision with respect to safety and pollution

[单选题]The lowest temperature at which fuel combustion becomes self-sustaining in the presence of a source of ignition, is defined as the _____

[单选题]For the oil purifier, the water content of the oil is continuously____ and when a pre-set maximum level is reached a total discharge function is automatically actuated.

[单选题]The construction of the main propulsion engine lube oil sump should___.

[单选题]The designed ____ is 20 tons per day, but the fresh water generator can only distil 15 tons at present

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