更多"Which statement is TRUE concerning "的相关试题:
[单项选择]Which statement concerning GPS is TRUE（）.
A. It cannot be used in all parts of the world
B. There are 12 functioning GPS satellites at present
C. It may be suspended without warning
D. Two position lines are used to give a 2D fix
[单项选择]Which statement concerning current is TRUE（）.
A. Current can be determined by measuring the direction and distance between simultaneous EP and DR positions
B. The drift of the current should be averaged out on a one hour basis
C. After the current is determined，it should not be used for further plotting because it is an unknown variable
D. The distance between a simultaneous DR position and fix is equal to the drift of the current
[单项选择]Which statement is TRUE concerning radiotelephones on board towing vessels?（）
A. There cannot be a radiotelephone located anywhere except in the wheelhouse
B. The officer in charge of the wheelhouse is considered to have the radiotelephone watch
C. Only distress messages may be transmitted over channel 13
D. Only the Master of the vessel is allowed to speak over the radiotelephone
[单项选择]Which statement is TRUE concerning apogean tides（）．
A. They occur only at quadrature
B. They occur when the Moon is nearest the Earth
C. They cause diurnal tides to become mixed
D. They have a decreased range from normal
[单项选择]Which statement is TRUE concerning gasoline vapors on board a vessel（）.
A. They are heavier than air and will settle in the lowest part of the vessel
B. They are lighter than air and will settle in the highest part of the vessel
C. They should be vented into the engine to improve combustion
D. They should be vented into the wheelhouse
[单项选择]Which statement is TRUE concerning the ventilation of engine and fuel tank compartments on uninspected towing vessels using fuel with a flash point of 100°F?（）
A. There shall be at least 3 ventilator ducts open to the atmosphere
B. At least one exhaust duct shall extend from the open atmosphere to the lower portion of the bilge
C. At least one intake duct shall extend from the open atmosphere to the lower portion of the bilge
D. Only vessels using fuel with a flash point above 110°F need ventilate engine and fuel compartments
[单项选择]Which statement is TRUE concerning equatorial tides（）.
A. They occur when the Sun is at minimum declination north or south
B. They occur when the Moon is at maximum declination north or south
C. The difference in height between consecutive high or low tides is at a minimum
D. They are used as the basis for the vulgar establishment of the port
[单项选择]Which statement is TRUE concerning spare charges for portable fire extinguishers on unmanned tank barges?（）.
A. Spare charges shall be carried for at least 50 percent of each size and variety required on board
B. If the unit cannot be charged by the vessel's personnel，one spare unit shall be carried in lieu of spare charges
C. Spare charges shall be stowed in watertight containers on deck
D. Regulations concerning spare charges do not apply to unmanned barges
[单项选择]Which statement is TRUE concerning the danger signal?（）.
A. When any vessel fails to understand the intentions of an approaching vessel she must sound the danger signal
B. Only the stand-on vessel can sound the danger signal
C. Distress signals may be used in place of the danger signal
D. The danger signal consists of 4 or more short blasts of the whistle
[单项选择]Which statement is TRUE concerning fuel vapors on a vessel（）.
A. Fuel vapors gather in the lowest portions of the vessel
B. Fuel vapors can only be ignited by an open flame
C. Vent outlets should be located above the level of the carburetor air intake
D. None of the above
[单项选择]Which statement is TRUE concerning protection of double bottom tanks against excessive pressure? （）
A. Each vent for the tank must be equal to the area of the tank filling line
B. The tanks must be protected by overflows
C. The total area of the vents or the overflow shall be at least equal to the area of the fill line
D. There must be twice as much vent area as the area of the fill line
[单项选择]Which statement is TRUE concerning the tandem working arrangement of pedestal cranes when completing a quad lift? （）
A. The discharge is slow due to the size of the cargo and all the cranes working together
B. The cargo discharge can be accomplished with controlled pendulation
C. The cargo discharge can be performed in port or at anchor
D. The cranes enable the handling of heavy cargos without shoreside assistance
[单项选择]Which statement is true concerning a vessel equipped with operational radar?（）.
A. The Master of the vessel must be on the bridge when the radar is in use
B. The radar equipment is only required to be used in restricted visibility
C. The use of a radar excuses a vessel from the need of a look-out
D. This equipment must be used to obtain early warning of risk of collision
[单项选择]Which statement is TRUE concerning a vessel equipped with operational radar?（）.
A. She must use this equipment to obtain early warning of risk of collision
B. The use of a radar excuses a vessel from the need of a look-out
C. The radar equipment is only required to be used in restricted visibility
D. The safe speed of such a vessel will likely be greater than that of vessels without radar
[单项选择]Which statement is TRUE concerning hawser towing? （）
A. The catenary in a hawser should be sufficient so that the hawser just touches the bottom
B. The hawser is of sufficient length for towing when taut between tug and tow
C. Increasing speed usually increases the catenary in the hawser
D. Shortening the tow hawser generally decreases the maneuverability of the tug
[单项选择]Which statement is TRUE concerning a towing vessel which，due to the nature of her work，is unable to keep out of the way of another vessel?（）
A. By day，she shall carry a black cylinder shape
B. By day，she shall carry two black balls in a vertical line
C. By night，she would show the same lights as a vessel not under command
D. By day，she would show the same shapes as a vessel restricted in her ability to maneuver
[单项选择]Which statement is TRUE concerning the placard entitled Discharge of Oil Prohibited（）.
A. It is required on all vessels
B. It may be located in a conspicuous place in the wheelhouse
C. It may be located at the bilge and ballast pump control station
D. All of the above
[单项选择]Which statement is TRUE concerning the gooseneck（）.
A. It is a sailing maneuver which brings the vessel's head through the wind
B. It connects the boom to the mast and allows the boom to swing freely
C. It is a sailing condition where there is a loss of air flow over the sails
D. None of the above
[单项选择]Which statement concerning locating signals in the GMDSS is FALSE（）.
A. Locating signals are transmitted by survival craft VHF transceivers
B. Locating signals are transmitted by SARTs
C. Locating signals are intended to facilitate the finding of a distressed vessel or its survivors
D. Locating signals are not transmitted by autoalarm generators
