更多"A major advantage of the NAVTEX sys"的相关试题:
[单项选择]The principal advantage of NAVTEX radio warnings is that（）.
A. they can be used by mariners who do not know Morse code
B. only an ordinary FM radio is necessary to receive these warnings
C. information on a given topic is only broadcast at specified times
D. they cover a broad spectrum of the radio band allowing reception on almost any type of receiver
[单项选择]The INMARSAT system has five major components, they are:（）
A. Space Segment, NCC, RCC, SES, and CES
B. Space Segment, a satellite system, C system, NCC and NCS
C. Space Segment, NCC, NCS, CES and SES
D. A system, C system, satellite system, earth stations and NCS
[单项选择]The Inmarsat system has five major components, they are:（）.
A. Space segment, NCC, RCC, SES and CES
B. Space Segment, a satellite system, C system, NCC and NCS
C. Space Segment, NCC, NCS,CES and SES
D. A system, C system, satellite system, earth stations and NCS
[单项选择]In an electro-hydraulic steering gear system, when will the variable displacement pump be placed on stroke?（）
A. When the helm is at any angle other than amidships
B. When the six-way valve is opened
C. When the ram relief valves lift
D. When the redder angle is different from the position of the helm
[单项选择]During severe storms when survival becomes a major concern，it may become necessary to relieve high anchor tensions on the windward side of the unit by（）.
A. deballasting the rig
B. ballasting the rig
C. paying out cable on the windward side
D. paying out cable on the leeward side
[单项选择]The major cause of fuel pump and injection system problems is （）
A. improper adjustments
B. contaminated fuel
C. kinked fuel lines
D. excessive engine vibration
[单项选择]When considering the lowest fuel system operating temperature, （） are important.
A. specific gravity or relative density
B. open flash point and closed flash point values
C. higher calorific and lower calorific values
D. cloud point and pour point values
[单项选择]When using the term limber system one is referring to a（）.
A. Cleaning system
B. Drainage system
C. Strengthening system
D. Weight reduction system
[单项选择]When operating the air supply system in a covered lifeboat the（）.
A. fuel supply valve should be closed
B. hatches，doors，and oar ports should be closed
C. air cylinder shut-off valve should be closed
D. engine should be shut off
[单项选择]When the ship security alert system is activated, it shall not（）
A. initiate a ship-to-shore security alert
B. transmit a ship-to-shore security alert
C. initiate an alert identifying the ship, its location
D. raise a security alarm on-board the ship indicating that the ship is under threat
[单项选择]When may the automatic identification system (AIS) be switched off? （）
A. At anytime as long as it is properly logged
B. At the Master's professional judgment
C. Only when the vessel is at anchor or in port
D. Under no circumstance
[单项选择]When adding oil to a refrigeration system, precautions must be taken to ensure that （）.
A. the compressor suction pressure is not too high
B. all air is purged from the pump and charging fittings
C. the high pressure cutout switch is held open to prevent accidental starting
D. the condenser is completely shutdown first
[单项选择]When a high pressure system is centered north of your vessel in the Northern Hemisphere（）.
A. You should experience hot，moist，clear weather
B. The wind direction is generally easterly
C. The winds should be from the southwest at your location
D. The winds should be brisk
[单项选择]When can routine communications be resumed when radio silence has been imposed?（）
A. After determining that the frequency or channel appears to be no longer in use
B. After determining that geographic distance from the distress situation will prohibit any other signal from interfering with emergency communications
C. Routine communications can resume after the Rescue Coordination Center transmits a message on the frequency or channel being used for emergency communications stating that such traffic has concluded
D. If，in the Master's opinion，communications on that frequency will interfere with emergency communications
[填空题]It is
when
you nearly lose someone
when
you become
fully
conscious of how much you value
them
.
[单项选择]A mooring system that results in a spread system without anchor buoys is called a（）.
A. permanent chasing system
B. wire rope mooring system
C. shepherd's crook mooring system
D. spring buoy mooring system
[名词解释]System management mode
[单项选择]A segregated ballast system is a system where （）.
A. all ballast is processed through the oily water separator
B. ballast is taken on and discharged through a separate main deck riser
C. ballast and cargo tanks are separated by cofferdams
D. all ballast lines, tanks, and pumps are independent of those used for oil
