When adjusting a magnetic compass for error，a deviation table should be made（）.

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• A vessel is heading magnetic northwest and its magnetic compass indicates a heading of 317°. What action should be taken to remove this error during compass adjustment? （）

  A . If the quadrantal spheres are out as far as possible replace them with smaller spheres B . If the quadrantal spheres are in as far as possible remove one of the spheres C . If the quadrantal spheres are in as far as possible replace them with smaller spheres D . If the quadrantal spheres are out as far as possible，move the quadrantal spheres i

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• When a magnetic compass is not in use for a prolonged period of time it should（）.

  A . be shielded from direct sunlight B . be locked into a constant heading C . have any air bubbles replaced with nitrogen D . have the compensating magnets removed

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• Before a magnetic compass is adjusted certain correctors must be checked to ensure that they are free of permanent magnetism. These correctors are the（）.

  A . fore-and-aft and athwartships magnets B . dip needle and heeling magnet C . heeling magnet and Flinders bar D . Flinders bar and quadrantal sphere

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• When an azimuth of the Sun has been taken and the deviation of the standard magnetic compass computed，the watch officer should record the results（）.

  A . In the vessel's Official Logbook B . On the compass deviation card C . In the compass deviation log D . On a Napier diagram

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• A vessel is heading magnetic north and its magnetic compass indicates a heading of 003°. What action should be taken to remove this error during compass adjustment? （）

  A . Move the quadrantal spheres closer to the compass B . Raise the heeling magnet if the red end is up C . Remove some of the Flinders bar D . Raise or lower the athwartship magnet

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• Magnetic variation changes with a change in（）.

  A . the vessel's heading B . sea conditions C . seasons D . the vessel's positio

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• When crossing the magnetic equator the（）.

  A . Flinders bar should be inverted B . Heeling magnet should be inverted C . The quadrantal spheres should be rotated 180° D . Flinders bar should be moved to the opposite side of the binnacle

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• Which magnetic compass corrector（s）CANNOT be set on a heading of magnetic east or magnetic west（）.

  A . Heeling magnet B . Flinders bar C . Fore-and-aft magnets D . All of the above can be set on magnetic east or magnetic west heading

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• A vessel is heading magnetic east and its magnetic compass indicates a heading of 086°. Which action should be taken to remove this error during compass adjustment?（）

  A . If the blue ends of the magnets are aft，and the fore-and-aft tray is at the top，you should add some magnets. B . If the blue ends of the magnets are aft you should lower the fore-and-aft tray C . If the blue ends of the magnets are aft，and the fore-and-aft tray is at the top，you should reverse the magnets D . If the blue ends of the magnets are forward，and the fore-and-aft tray is at the bottom，you should add some magnet

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• A vessel is heading magnetic northwest and its magnetic compass indicates a heading of 312°. What action should be taken to remove this error during compass adjustment? （）

  A . If the quadrantal spheres are all the way out，replace them with smaller spheres B . If the quadrantal spheres are all the way in，replace them with larger spheres C . If the quadrantal spheres are all of the way out，move the spheres in D . If the quadrantal spheres are all the way out，replace them with larger spheres.

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• If a ship is proceeding towards the magnetic equator，the uncorrected deviation due to permanent magnetism（）.

  A . increases B . remains the same C . decreases D . is unimportant and may be neglected

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• If a magnetic compass is not affected by any magnetic field other than the Earth’s，which statement is TRUE?（）.

  A . Compass error and variation are equal B . Compass north will be true north C . Variation will equal deviation D . There will be no compass error

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• （） should be tested and adjusted when the boiler survey is carried out.

  A . The boiler oil tank B . The steam pipe C . The fire side D . The safety valve

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• When daylight savings time is kept，the time of tide and current calculations must be adjusted.One way of doing this is to（）.

  A . Add one hour to the times listed under the reference stations B . Subtract one hour from the time differences listed for the subordinate stations C . Apply no correction as the times in the reference stations are adjusted for daylight savings time D . Add 15° to the standard meridian when calculating the time difference

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• Magnetic information on a chart may be （）.

  A . found in the center(s) of the compass rose(s) B . indicated by isogonic lines C . found in a note on the chart D . All of the above

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• You are about to go to sea and adjust the magnetic compass．To expedite the adjustment at sea，in what order should the following dockside adjustments be made（）.

  A . Flinders bar first，then the heeling magnet and spheres B . Heeling magnet first，then the Flinders bar and spheres C . Flinders bar first，then the spheres and heeling magnet D . Spheres first，then the Flinders bar and heeling magnet

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• 35. The principal purpose of adjustment of the magnetic compass is to eliminate _____ as far as possible.

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• 8. When I first came to this city, everything was _________ me. It took me a long time to adjust myself to the new environment.

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• 67. When azimuth of the Sun has been taken and the deviation of the standard magnetic computed, the watch officer should record the results _____.

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• 4. When will you have to adjust gain?

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• When azimuth of the Sun has been taken and the deviation of the standard magnetic computed, the watch officer should record the results _____.

  A．in the vessel’s Official Logbook B．on the compass deviation card C．in the compass deviation log D．on a Napier diagram

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• The Inductrack Ⅱ design can produce a very strong magnetic field even when the train runs more slowly by ______.

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• 请翻译以下内容和10个部件，并简要说明它们的各自功能。 All CRT monitors have a CRT, which is a vacuum tube. One end of this tube is a slender cylinder that consists of three electron guns. The wide end of the CRT is the display screen. When power is applied to one or more of the electron guns, a stream of electrons is generated. This stream is subjected to a magnetic field generated by a ring of electromagnets called a yoke. The phosphor coating, when struck by the electro

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