The lifesaving signal indicating You are seen - assistance will be given as soon as possible is the（）.

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• The abandon ship signal sounded by the vessels whistle is （）.

  A . 6 short blasts and 1 long blast B . long blast mare than 6 short blasts C . more than 6 short blasts and 1 long blast D . 1 long blast of at least 10 second

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• Which document lists all the lifesaving equipment required for a vessel? （）

  A . Certificate of Inspection B . American Bureau of Shipping Classification Certificate C . International Convention for the Safety of Life at Sea Certificate D . Certificate of Registry

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• Required lifesaving equipment on existing vessels may becontinued in use on the vessel if（）.

  A . kept on board no more than 2 years B . inspected and serviced every 6 months C . destroyed if more than 5 years old D . maintained in good and serviceable conditio

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• What is the lifesaving signal for You are seen -assistance will be given as soon as possible?（）

  A . 3 white star signals B . Horizontal motion with a white flag C . Vertical motion of a white light D . Code letter K by blinker light

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• While reading the muster list, you see that "three short blasts on the ships whistle and the same signal on the general alarm bells" is the signal for （）.

  A . abandon ship B . dismissal from drills C . fire and emergency D . man overboard

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• Where would you find a list of the lifesaving equipment onboard your supply boat? （）

  A . Ship's Articles B . Muster List ("Station Bill") C . Certificate of Inspection D . Coast Guard Regulatio

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• In the International Code of Signals，the code signal meaning I require immediate assistance is（）.

  A . AE B . CB C . DX D . CP

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• About three million people have migrated to Britain since World War ll.They are mainly from the West Indies,India and（）

  A . Indonesia B . Singapore C . Hong Kong D . Pakista

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• The signal given to commence lowering the lifeboats is（）.

  A . 3 short blasts of the ship's whistle B . 1 short blast of the ship's whistle C . 3 long blasts of the ship's whistle D . 1 long blast of the ship's whistle

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• Instructions to the crew in the use of all the ship’s lifesaving equipment shall be completed（）.

  A . before sailing B . within one week of sailing C . in one month and repeated quarterly D . within any two month period

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• The radiotelephone safety signal is（）.

  A . securite repeated 3 times B . safety repeated 3 times C . pan pan repeated 3 times D . securite securite repeated 3 time

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• The signal man assisting a crane operator has his arm extended with his fingers closed and thumb pointing upward. This is the signal to（）.

  A . raise the boom B . raise the hook C . raise the boom and hook D . check the boom sto

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• A rigid lifesaving device only designed for survivors to hold on to while in the water is a（）.

  A . liferaft B . life float C . life preserver D . buoyant apparatu

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• Analog signal and digital signal are two kinds of signals in the form of control.

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• The patrolman signaled to the speeding driver to pull___

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• if the feedback signal is fed back to the reverting input, it is a ( ) feedback, and if the feedback signal is fed back to the nonreverting input, it is a ( ) feedback

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• ______is the device that provides amplification(the increase in current, voltage, or power of a signal)without appreciably altering the original signal.

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