Seawater may be used for drinking water ______.

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• 1CO2 extinguishes a fire by __________.

  A.a blanket of bubbles formed on the surface of the fire

  B.smothering

  C.isolating the heat from the fuel

  D.cooling

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• 2The three basic components of a fire are chain reaction, heat, fuel, and ______.

  A.carbon monoxide

  B.oxygen

  C.carbon dioxide

  D.any gaseous substance

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• 3Fires involving combustible metals are classified as ______.

  A.class 'A' fires

  B.class 'B' fires

  C.class 'C' fires

  D.class 'D' fires

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• 4A tank has been sealed and unventilated(不通风的) for a long period of time. Which of the following conditions does this indicate、

  A.The tank is safe to enter.

  B.The tank is especially dangerous to enter.

  C.Carbon monoxide(一氧化碳) is present.

  D.Water vapor present when the tank was sealed has oxidized(使氧化).

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• 5After the order ' ______' is given, the air system is shut down, the turning gear put in.

  A.Finished With Engine

  B.Stop The Engine

  C.Stand-by Engine

  D.Slow-down Engine

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• 6Obviously, for a given fuel oil, its pour point is ______its cloud point.

  A.lower than

  B.higher than

  C.as same as

  D.better than

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• 7Now that the valve is not worth ______, I suggest it ______.

  A.to repair/renewing

  B.repairing/renewing

  C.to repair/ be renewed

  D.repairing/be renewed

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• 8When a vessel is in dry-dock, the vessel's engineers should ______.

  A.examine the condition of the propeller

  B.chip and paint all hull protection zincs

  C.install new docking plugs in all cofferdams

  D.inspect the hull for hogging or sagging

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• 9The additional mark ______in the Classification Certificate for Machinery represents the propulsion apparatus is remotely controlled on the navigating bridge control station, and engine room is watched by duty personnel.

  A.BRC

  B.MCC

  C.AUT-0

  D.AUT-1

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• 10Oil Record Book Part I shall be provided to ______.

  A.every oil tanker

  B.every ship of 400 tons gross tonnage and above

  C.every ship

  D.any ship

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