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单选题
The Flinders bar and the quadrantal spheres should be tested for permanent magnetism at what interval（）.
A
They are not subject to permanent magnetism; no check is necessary
B
Semiannually
C
Annually
D
Every five years
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考题
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单选题The safety valves should be tested and adjusted when the boiler survey is （）A
completedB
carried outC
cleanedD
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考题
单选题Which statement about the Flinders bar of the magnetic compass is CORRECT（）.A
It compensates for the error caused by the vertical component of the Earth's magnetic fieldB
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考题
单选题Which compensates for errors introduced when the vessel heels over（）.A
The soft iron spheres on the arms of the binnacleB
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A single vertical magnet beneath the compassD
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考题
单选题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 spheresB
If the quadrantal spheres are all the way in，replace them with larger spheresC
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考题
单选题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
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考题
单选题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 spheresB
If the quadrantal spheres are in as far as possible remove one of the spheresC
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考题
单选题A vessel has been equipped with an oil lubricated stern bearing and is undergoing a routine dry-dock.Which of the following inspection should be made when the tail-shaft has been drawn?（）A
The overall condition of the bearing surface should be examinedB
The shaft liner should be inspected for cracks and tested to insure a tight fitC
The stern tube should be tested for cracks with dye penetrantD
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考题
单选题The water in an auxiliary boiler should be tested daily for （）.A
dissolved oxygenB
chloridesC
sludgeD
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考题
单选题Which statement concerning the lashings of containers with solid bar or wire rope lashings is TRUE? （）A
Stack weights should be less when using a solid bar lashing as compared to a wire lashingB
Stack heights may be increased when using a solid bar lashingC
Stack heights should be reduced when using a solid bar lashingD
Solid bars should be used for lashing the first tier only，with wire lashings on the higher tier(s)
考题
单选题The Flinders bar on a magnetic compass compensates for the（）.A
induced magnetism in vertical soft ironB
induced magnetism in horizontal soft ironC
permanent magnetism in ship's steelD
vessel's inclination from the vertical
考题
单选题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 magnetsB
dip needle and heeling magnetC
heeling magnet and Flinders barD
Flinders bar and quadrantal spheres
考题
单选题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 spheresB
Heeling magnet first，then the Flinders bar and spheresC
Flinders bar first，then the spheres and heeling magnetD
Spheres first，then the Flinders bar and heeling magnet
考题
单选题The quadrantal spheres are used to（）.A
Remove deviation on the intercardinal headingsB
Remove deviation on the cardinal compass headingsC
Remove heeling errorD
Compensate for induced magnetism in vertical soft iron
考题
单选题When crossing the magnetic equator the（）.A
Flinders bar should be invertedB
Heeling magnet should be invertedC
The quadrantal spheres should be rotated 180°D
Flinders bar should be moved to the opposite side of the binnacle
考题
单选题The water in an operating auxiliary boiler should be tested for alkalinity and chloride content each（）.A
hourB
dayC
weekD
month
考题
单选题When adjusting a magnetic compass for error，a deviation table should be made（）.A
before correcting for any deviationB
after correcting for variationC
after adjusting the fore-and-aft and athwartships permanent magnetsD
before the quadrantal correctors are placed on the compass
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