更多"Which harmful consequence may be th"的相关试题:
[单项选择]I must hold（）for any damage which may result from the accidents you have caused.
A. your responsible
B. you responsible
C. you are responsible
D. your are responsible
[单项选择]Oil oxidation, as a result of excessively high lube oil temperature, is harmful to a diesel engine because （）
A. oil foaming will occur
B. large quantities of oil are consumed
C. lube oil viscosity is always decreased
D. corrosive by-products are usually formed
[单项选择]Which may ignite fuel vapors?（）
A. Static electricity
B. An open and running motor
C. Loose wiring
D. All of the above
[单项选择]The only wire rope termination which may be made in the field is（）.
A. swaged socket
B. thimbled mechanical splice
C. hand splice
D. spelter poured and resin sockets
[单项选择]Which of the following will be the function of lubricating oil used in marine engines?（）
A. to remove heat from oil cooled pistons
B. to wash away wear detritus
C. to neutralize acidic products
D. all of the above
[单项选择]
Leaky exhaust valve will result in which of the following?（）
(1) high exhaust temperature;
(2) low compression pressure;
(3) low firing pressure.
A. (1) and (2)
B. (1) only
C. (2) only
D. (1),(2) and (3)
[单项选择]Which person may command a lifeboat in ocean service?（）
A. Licensed deck officer
B. Able seaman
C. Certificated person
D. All of the above
[单项选择]Which operation may cause the pressure in an inert tank to fall below the prescribed limits（）.
A. Loading
B. Discharging
C. Crude oil washing
D. Steaming tanks
[单项选择]Which vessel may show three lights in a vertical line，the top and bottom being red and the middle being white? （）
A. A vessel engaged in diving operations
B. A pilot vessel
C. A vessel trawling
D. All of the above
[单项选择]Which system may be useful for messages，such as local storm warnings or a shore-to-ship distress alert，for which it is inappropriate to alert all ships in the satellite coverage area?（）
A. NAVTEX
B. EGC
C. AMVER
D. DSC
[单项选择]Which item may be substituted for，in the fireman’s outfit，on a cargo vessel?（）
A. fire ax
B. flashlight
C. rigid helmet
D. flame safety lamp
[单项选择]Low compression of diesel engine may result from （）
A. a worn cylinder
B. broken piston rings
C. any of A and B
D. none of the above
[单项选择]
Which of the following may cause that excessively warm water leaves the condenser in a refrigeration plant? （）
(1) too little cooling water
(2) too much cooling water
(3) too warm cooler water
A. （1）only
B. anyof（1），（2）and（3）
C. anyof（1）and（3）
D. anyof（1）and（2）
[单项选择]Overheating of a hydraulic system may be a result of （）.
A. changing pump discharge pressure in response to normal load variations
B. a high oil level
C. incorrect fluid viscosity
D. continued slow re-circulation of the oil
[单项选择]The maximum distance at which a light may be seen under the existing visibility conditions is called（）.
A. nominal range
B. luminous range
C. charted range
D. geographic range
[单项选择]Which of the following conditions may contribute to the formation of deposits on the blades of the turbocharger turbine?（）
A. Poor combustion
B. High cylinder oil consumption
C. Leaking exhaust valves
D. All of the above
[单项选择]Which of the following conditions may be attributed to a fouled turbocharger compressor inlet screen or filter?（）
A. Decreasing scavenge air pressure
B. Increasing exhaust temperatures before the turbine
C. Reduction in engine speed
D. All of the above
