更多"Which of the listed factors will in"的相关试题:
[单项选择]Which of the factors listed has the greatest effect on the mechanical efficiency of a diesel engine?（）
A. temperature of the intake air
B. friction within the engine
C. mechanical condition of the supercharger
D. mechanical condition of the turbocharger
[单项选择]Which of the equipment listed is most effective in processing bilge slops for overboard discharge?（）
A. 100PPM oily water separator
B. Assembling the lube oil purifier as a separator and aligning bilge overboard
C. A 15PPM oily water separator
D. A magnetic duplex strainer
[单项选择]Which of the processes listed would be the most satisfactory method to use to lower the humidity of the air being circulated by an air conditioning system?（）
A. Cooling the air to a temperature just above dew point
B. Heating the air to a point at which moisture will boil off ,then re-cooling it
C. Cooling the air to a point below dew point, then reheating it
D. Heating the air and then cooling it to a point below dew point
[单项选择]Which of the listed classes of fire would most likely occur in the engine room of a vessel?（）
A. Classes A and B
B. Classes B and C
C. Classes C and D
D. Classes A and D
[单项选择]The two factors which make underwater hull repair difficult are accessibility and the（）.
A. availability of tools
B. shape of the hull
C. pressure exerted by the water
D. threat of progressive flooding
[单项选择]One of the factors which affects the circulation of ocean currents is（）.
A. humidity
B. varying densities of water
C. vessel traffic
D. the jet stream
[单项选择]Chart legends which indicate a conspicuous landmark are printed in（）.
A. capital letters
B. italics
C. boldface print
D. underlined letters
[单项选择]Which will most likely occur when entering shallow water? （）
A. Rudder action will become more effective
B. The vessel's list will change
C. The vessel's trim will change
D. An increase in speed will occur
[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 of the following factors will have the greatest effect on the heating load within a conditioned space?（）
A. Solar gain
B. Infiltration and ventilation air
C. Occupants inside the space
D. Entertainment equipment within the space
[单项选择]Which of the following factors tends to increase scale formation on the saltwater side of a heat exchanger used in a diesel engine cooling water system?（）
A. Baffle plates that have been bent during prior removal
B. Leaks in the cooler tube nest
C. Operating the engine while maintaining a high sea water outlet temperature
D. A punctured sea water strainer supplying cooling water to the heat exchanger
[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]The valve which is most suited for regulating the flow through a pipeline is a （）
A. gate valve
B. globe valve
C. swing-check valve
D. plug-cock valve
[单项选择]Which factor(s) might indicate that a towline should be removed from service? （）
A. Visible damage to the towline，including fishhooks
B. Measurements showing a decrease in diameter
C. A surface condition of corrosion and discoloration
D. All of the above
[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
