You notice smoke coming from an open laundry room doorway．After activating the fire alarm, which of the following would you do FIRST、

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• 1Aboard a survival craft，ether can be used to ______．

  A.start the engine in cold weather

  B.aid in helping personnel breathe

  C.prime the sprinkler system

  D.prime the air supply

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• 2What is the minimum period of time that the air supply for a self-contained breathing apparatus is required to last、

  A.10 minutes

  B.20 minutes

  C.30 minutes

  D.90 minutes

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• 3My ship is equipped ______ automatic hatch covers．

  A.with

  B.by

  C.on

  D.in

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• 4A hygrometer is a device used for determining ______．

  A.the absolute temperature

  B.atmospheric pressure

  C.wind velocity

  D.relative humidity

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• 5Manila lines in which the strands are right-hand laid ______．

  A.should be coiled in a clockwise direction

  B.should be coiled in a counterclockwise direction

  C.may be coiled either clockwise or counterclockwise

  D.should never be coiled

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• 6If the survival craft is not loaded to full capacity，the personnel should be ______．

  A.loaded more on the port side forward

  B.loaded equally on both sides with more forward

  C.loaded equally on both sides with more aft

  D.allowed to sit anywhere

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• 7Keeping the draft at or below the load line mark will insure that the vessel has adequate ______．

  A.ballast

  B.reserve buoyancy

  C.displacement

  D.rolling periods

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• 8The two most effective generating forces of surface ocean currents are ______．

  A.temperature and salinity differences in the water

  B.wind and density differences in the water

  C.water depth and underwater topography

  D.rotation of the Earth and continental interference

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• 9GM cannot be used as an indicator of stability at all angles of inclination because ______．

  A.M is not fixed at large angles

  B.there is no M at large angles

  C.G is not fixed at large angles

  D.there is no G at large angles

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• 10The distance between the surface of the water and the tidal datum is the _______．

  A.height of tide

  B.charted depth

  C.actual water depth

  D.range of tide

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