更多"The radiotelegraphy safety messages"的相关试题:
[单项选择]（）the vessel have no safety radiotelegraphy certificate at the time of her delivery,she （） be held to be unseaworthy.
A. If／may
B. Will／shall
C. Should／would
D. Would／should
[单项选择]Messages concerning weather conditions transmitted by radiotelephone are preceded by（）.
A. MAYDAY
B. PAN-PAN
C. SECURITE
D. SOS
[单项选择]The radiotelephone safety message urgently concerned with safety of a person would be prefixed by the word（）.
A. Mayday
B. Pan
C. Safety
D. Interco
[单项选择]Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.
A. increasing the volume of intake air
B. shutting off the fuel supply
C. increasing the engine back pressure
D. over-speeding the engine
[单项选择]Which condition represents the appropriate time for setting off distress flares and rockets? （）
A. Only when there is a chance of their being seen by rescue vessels
B. At half hour intervals
C. At one hour intervals
D. Immediately upon abandoning the vessel
[单项选择]Which condition suggests that your present position lies in the navigable semicircle of a tropical storm（）.
A. A backing wind
B. A veering wind
C. Sustained gale force winds
D. A strong wind that maintains a constant speed and direction
[单项选择]SafetyNet is a maritime safety information broadcast service offering（）on suitably equipped ships.
A. free reception
B. free transmission
C. dedicated reception
D. dedicated transmission
[单项选择]Maritime Safety Information（）International SafetyNet Service and NAVTEX Service.
A. consists of
B. can be received
C. is transmitted by
D. Are made on
[单项选择]Safety is dependent on orderliness and cleanlinessOrder may be maintained by （）
A. storing all items in an assigned place
B. storing all items in a common storage container except those ready-for-sea
C. tagging all items according to their age and then storing them together
D. disposing of worn-out items
[单项选择]The transmission of messages respecting the dangers specified is free（）cost to the ships concerned.
A. of
B. on
C. at
D. in
[单项选择]Which characteristic or condition will have the greatest effect on increasing a hydraulic oils viscosity?（）
A. Pour point
B. Cloud point
C. Vacuum
D. Pressure
[单项选择]The center line condition of the transmission shaft can be checked by（）
A. the border flange’s excursion and flection
B. the both end shafts line’s accordance
C. the border flange’s flection and the both end shafts line’s accordance
D. the border flange’s accordance and both end shafts flection degree
[单项选择]To ensure oil purifier working in normal condition,the interval between two sludge discharging should not exceed（） hours.
A. 2
B. 4
C. 5
D. 6
[单项选择]Which condition indicates the air side fouling of an after-cooler on a turbocharged diesel engine?（）
A. An increased air temperature differential between the cooler inlet and outlet
B. A decrease in the air pressure differential across the cooler
C. Excessive condensate forming in the air box
D. A decrease in the air temperature differential between the cooler inlet and outlet
[单项选择]What condition will result in the automatic shutdown of a diesel engine? （）
A. High jacket water pressure
B. High lube oil pressure
C. Low lube oil pressure
D. Excessive turbo charger speed
[单项选择]A condition contributing to diesel engine piston rings sticking in the ring grooves, is insufficient ring clearance at the ring（）
A. gap
B. side
C. back
D. radial
[单项选择]To correct the condition of slugging and flooding back in a refrigeration system, it may be necessary to （）.
A. re-adjust the discharge pressure
B. clean the expansion valve screen
C. add refrigerant
D. adjust the expansion valve
[单项选择]A condition that can increase the foaming tendency of lube oil is （）
A. excessively high oil temperatures
B. water or moisture contamination
C. fuel dilution
D. life its cylinder relief vales
