更多"Which of the routine maintenance pr"的相关试题:
[单项选择]Which of the routine maintenance procedure listed is required for starting air receivers?（）
A. Frequent draining of accumulated moisture
B. Frequent testing of relief valves
C. A close watch on temperature to prevent fluctuations in pressure
D. Frequent cleaning to re move oil and foreign matter
[单项选择]Which of the listed pre-start procedures should be carried out prior to starting a crosshead type diesel engine after an overhaul?（）
A. Pre-lube cylinders with hand cranks
B. Open all air space drain cocks
C. Open all indicator valves
D. All of the above
[单项选择]Routine maintenance of lead acid batteries should include （）.
A. keeping the terminals clean
B. coating cable connections with petroleum jelly
C. maintaining a trickle charge
D. All of the above
[单项选择]The company should establish procedures by which（）receive relevant information on the safety management system in working language or language understood by them.
A. New personnel
B. The ship's personnel
C. Personnel transferred to new assignments
D. Visitor
[单项选择]Routine maintenance on a Central Control Room hermetically sealed air conditioning unit should include （）
A. changing the air filter
B. recharging the system
C. changing compressor lubricant
D. renewing container vacuum
[单项选择]Which of the following operating procedures should be carried out immediately after any diesel engine is started?（）
A. Take all exhaust temperature reading
B. Check the sump oil level
C. Verify proper lube oil pressure
D. All of the above
[单项选择]Which of the following procedures should be carried out when a large, low-speed, diesel engine is operated with one cylinder secured?（）
A. Lubrication to the defective cylinder should be increased
B. Cooling water temperature to the engine should be increased
C. Only the turbocharger speed should be reduced
D. Engine speed should be reduced
[单项选择]Which of the following procedures decreases the total dissolved solids concentration in the water of an auxiliary boiler?（）
A. Hydrazine treatment of condensate
B. Frequent compounding
C. Chemical cleaning
D. Bottom blowing
[单项选择]Which maintenance functions can a GMDSS Radio Operator perform（）.
A. The Operator can make fine internal adjustments to the transmitter as long as the output power does not change by more than one percent
B. The Operator is responsible for ensuring that INMARSAT antennas are free of built-up soot and clear of obstacles
C. All levels of maintenance must be performed by a licensed GMDSS Radio Maintainer
D. The Operator may install an EPROM in order to ensure that the equipment continues to operate within legal constraints
[单项选择]Which of the listed refrigeration system components keeps the refrigerant circulating through the system?（）
A. Expansion valve
B. Condenser
C. Evaporator
D. Compressor
[单项选择]Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
A. Sensitivity
B. Power
C. Speed droop
D. Compensation
[单项选择]Which is not the maintenance work for shaft bearings in transmission system?（）
A. check oil level in bearing sump
B. check them for leakagec through end seals
C. pump bilges in time
D. check temperature
[单项选择]Which of the listed statements is correct concerning the starting of centrifugal pumps?（）
A. They should always be started with the discharge valve closed
B. They should always be started with the discharge valve opened
C. A priming pump is always required to flood the impeller suction
D. They should always be started with the sealing line valves closed
[单项选择]Which of the listed substances can be satisfactorily removed from diesel fuel by centrifuging?（）
A. Sludge
B. Gasoline
C. Fuel oil
D. Lube oil
[单项选择]Which of the listed conditions will affective pressure the most in the cylinder of a diesel engine?（）
A. TBN of the lubricating oil
B. Temperature of the lube oil
C. Completeness in the mixing of the fuel and air
D. Temperature of the cooling (sea) water
[单项选择]Which of the listed statements is a characteristic of the liquid charged power element used with thermostatic expansion valves?（）
A. At the designed operating temperature, the liquid refrigerant charge has changed to a vapor
B. The liquid refrigerant tends to collect at the bellows or diaphragm and reduces the valve sensitivity
C. The sensing bulb is empty of liquid refrigerant charge at the designed operating temperature
D. The sensing bulb is never emptied of liquid refrigerant under normal operating conditions
[单项选择]Which of the listed cylinder liner surface conditions indicates proper lubrication?（）
A. Dull black appearance
B. Bright appearance
C. Thin layer of lacquer
D. Thick oily film
