更多"Which statement is TRUE，according t"的相关试题:
[单项选择]Which statement about the Navigation Rules is TRUE?（）.
A. The rules require vessels to comply with Traffic Separation Scheme regulations
B. The rules use the term safe speed
C. The Rules permit a stand-on vessel to take action prior to being in extremis
D. All of the above are correct
[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 lifeboat gripes?（）
A. They must be released by freeing a safety shackle
B. They should not be released until the boat is in lowering position
C. They may be adjusted by a turnbuckle
D. They are normally used only with radial davits
[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（）.
A. You need not keep a record of ground garbage dumped into the sea more than 25 miles offshore
B. You must keep a record of garbage discharged in port to a shore facility
C. You need not keep a record of garbage incinerated on the ship
D. You must keep a record of the approximate weight of the garbage dumped
[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 about satellite navigation is TRUE? （）
A. While a fix can be generated by signals received from two satellites，three satellites are necessary for reliable accuracy
B. The satellites are in equatorial orbits around the earth about 60°of longitude apart
C. The satellite navigation system determines a fix by measuring the doppler shift of the radio signals from the satellite
D. The ship's receiver cannot begin processing data until the antenna locks onto the satellite and starts continuous tracking
[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 in an overtaking situation（）.
A. One vessel is approaching another vessel from more than 20° abaft the beam
B. It is the duty of the vessel being overtaken to get out of the way
C. Any later change of bearing between the two vessels shall not make the overtaking vessel a crossing vessel
D. All 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
