更多"Which of the listed sections of an "的相关试题:
[单项选择]Which emergency equipment should you keep near the towing bitts（）.
A. A self-contained breathing apparatus
B. A boat hook and a spanner wrench
C. A fire ax and/or cutting torch
D. A Stokes litter basket
[单项选择]Which of the following represents the emergency signal for fire aboard ship?（）
A. More than six short blasts and one long blast on the whistle
B. Continuous blast of the ships whistle for a period of not less than 10 seconds supplemented by the same signal on the general alarm
C. Three short blasts of the whistle supplemented by the same signal on the general alarm
D. More than six short blasts and one long blast on the whistle supplemented by the same signal on the general alarm
[单项选择]Which spoken emergency signal would you use to call a boat to come assist a man overboard?（）
A. Distress signal
B. Urgency signal
C. Safety signal
D. None of the above
[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 emergency is required to be covered at the required periodic drills on a fishing vessel?（）
A. Recovering an individual from the water
B. Steering casualty
C. Emergency towing
D. Loss of propulsion power
[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 routine maintenance procedures listed is required for starting air receivers?（）
A. over-speeding
B. overload
C. low exhaust temperature
D. high crankcase pressure
[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
[单项选择]Which of the listed pressure control valves would be used to establish the maximum operating pressure of a hydraulic system?（）
A. Pressure-reducing valve
B. Unloading valve
C. Counterbalance valve
D. Pressure-relief valve
[单项选择]Which of the listed diesel engine operating conditions should be checked immediately after any diesel engine is started?（）
A. Exhaust temperature
B. Lube oil level
C. Lube oil pressure
D. Water level in the expansion tank
[单项选择]Which of the listed effects represents the purpose of heat treating steel?（）
A. Develop ductility
B. Improve machining qualities
C. Relieves stresses
D. All of the above
[单项选择]In which of the listed refrigeration system components does superheating of the refrigerant take place?（）
A. Expansion valve
B. Evaporator
C. Drier
D. Receiver
