单选题If a ship is proceeding towards the magnetic equator，the uncorrected deviation due to permanent magnetism（）.AincreasesBremains the sameCdecreasesDis unimportant and may be neglected
单选题
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
参考解析
解析：
暂无解析
相关考题：
An electrical device which employs a stationary armature and a rotating electromagnetic field is used aboard as aA.magnetic amplifierB.ship's service alternatorC.three-wire DC generatorD.saturable core reactor
Permanent magnetism is caused by ______.A.operation of electrical equipment and generators on board shipB.the earth's magnetic field affecting the ship's hard iron during constructionC.the horizontal component of the earth's magnetic field acting on the horizontal soft ironD.the vertical component of the earth's magnetic field acting on the vertical soft iron
Before sailing，mariners on duty shall check the headings of magnetic compass by comparison with ______.A.ship's clockB.engine movement recorderC.repeatersD.navigation lights
That ______ is not caused by shallow water．A.turning ability deterioratesB.virtual mass increasesC.the effect of the propeller transverse thrust on yaw altersD.the ship will turn with its head towards the wind
Your vessel is proceeding down a channel，and you see a pair of range lights that are in line dead ahead．The chart indicates that the direction of this pair of lights is 229°T，and variation is 6°W．If the heading of your vessel at the time of the sighting is 232°per standard magnetic compass，what is the correct deviation ________．A.3°EB.9°EC.3°WD.9°W
On a vessel proceeding from a very cold to a warm climate with a cargo of a nonhygroscopic nature in the holds，which is TRUE ________．A.Danger of heavy ship sweat exists；constant and vigorous ventilation is requiredB.There is danger of heavy cargo sweat if outside air is introduced by ventilationC.There is little danger of ship's sweat，slight possibility of cargo sweat；moderate ventilation is neededD.The possibility of any sweat problem，either cargo or ship，is remote
A ship under construction or major repair will acquire permanent magnetism due to ______ while sitting stationary in the earth's magnetic field．A.hammering and jarringB.vibration and poundingC.varying magnetic fieldsD.stable or permanent magnetism of the ship
Which magnetic compass corrector（s）CANNOT be set on a heading of magnetic east or magnetic west ________．A.Heeling magnetB.Flinders barC.Fore-and-aft magnetsD.All of the above can be set on magnetic east or magnetic west headings
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
If a ship is proceeding towards the magnetic equator, the uncorrected deviation due to permanent magnetism ______.A.increasesB.remains the sameC.decreasesD.is unimportant and may be neglected
单选题（）is not a condition for a ship of 400 tons gross tonnage and above other than an oil tanker to discharge certain amount of oil or oily mixtures into the sea.Athe ship is not within a special areaBthe ship is more than 12 nautical miles from the nearest landCthe ship is proceeding en routeDthe instantaneous rate of discharge of oil content does not exceed 60 liters per nautical mile
单选题That（）is not caused by shallow water.Aturning ability deterioratesBvirtual mass increasesCthe effect of the propeller transverse thrust on yaw altersDthe ship will turn with its head towards the wind
单选题The magnetic compass magnets are acted on by the horizontal component of the Earth’s total magnetic force. This magnetic force is GREATEST at the（）.Anorth magnetic poleBsouth magnetic poleCmagnetic prime vertical meridianDmagnetic equator
单选题A vessel is proceeding from a very cold climate to a warm climate.With a cargo of non-hygroscopic nature，which of the following is correct?（）.AThere is danger of heavy cargo sweat if outside air is introduced by ventilationBDanger of the ship sweat exists.Constant and vigorous ventilation is requiredCThere is little danger of ship's sweat;slight possibility of cargo sweatDThe possibility of any ship or cargo sweat is remote
单选题Which magnetic compass corrector（s）CANNOT be set on a heading of magnetic east or magnetic west（）.AHeeling magnetBFlinders barCFore-and-aft magnetsDAll of the above can be set on magnetic east or magnetic west headings
单选题The greatest directive force is exerted on the magnetic compass when the（）.Aneedles are nearly in line with the meridianBvessel is near the magnetic polesCvariation is near zeroDvessel is near the magnetic equator
单选题0n a vesel proceeding from a very cold to a warm climate with a cargo of a nonhygroscopic nature in the holds, which is true?（）.ADanger of heavy ship sweat exists; constant and vigorous ventilation is requiredBThere is danger of heavy cargo sweat if outside air is introduced by ventilationCThere is little danger of ships sweat, slight possibility of cargo sweat; moderate ventilation is neededDThe po sibility of any sweat problem, either cargo or ship, is frame
单选题Magnetic dip is a measurement of the angle between the（）.Ageographic pole and the magnetic poleBlubber's line and true northChorizontal and the magnetic line of forceDcompass heading and the magnetic heading
单选题A vessel is proceeding downstream in a narrow channel on the Western Rivers when another vessel is sighted moving upstream. Which vessel has the right of way? （）AThe vessel moving upstream against the currentBThe vessel moving downstream with a following currentCThe vessel located more towards the channel centerlineDThe vessel with the least amount of maneuverability
单选题The Flinders bar on a magnetic compass compensates for the（）.Ainduced magnetism in vertical soft ironBinduced magnetism in horizontal soft ironCpermanent magnetism in ship's steelDvessel's inclination from the vertical
单选题You are proceeding to a distress site．The survivors are in liferafts.What will make your ship more visible to the survivors（）.ASteering a sinuous courseBSteering a zig-zag courseCTurning on all available deck lights at nightDDumping debris over the side to make a trail to your vessel
单选题Permanent magnetism is caused by（）.Aoperation of electrical equipment and generators on board shipBthe earth's magnetic field affecting the ship's hard iron during constructionCthe horizontal component of the earth's magnetic field acting on the horizontal soft ironDthe vertical component of the earth's magnetic field acting on the vertical soft iron
单选题A ship under construction or major repair will acquire permanent magnetism due to（）while sitting stationary in the earth’s magnetic field.Ahammering and jarringBvibration and poundingCvarying magnetic fieldsDstable or permanent magnetism of the ship
单选题When crossing the magnetic equator the（）.AFlinders bar should be invertedBHeeling magnet should be invertedCThe quadrantal spheres should be rotated 180°DFlinders bar should be moved to the opposite side of the binnacle
单选题The advantage of geostationary satellites is（）.Athe range of antenna can cover everywhere in the worldBwe can know the ship’s exact positionCthat the distress alert can be located as soon as possibleDantenna of permanent earth stations may be directed towards fixed points in the sky
单选题The main purpose of port State control is not to（）Aprevent an unsafe ship proceeding to seaBprevent a ship threatening the marine environmentCfine the shipsDconfirm a safe sailing
单选题At the magnetic equator there is no induced magnetism in the vertical soft iron because（）.Athe lines of force cross the equator on a 0°-180°alignmentBthe quadrantal error is 0°Cthere is no vertical component of the Earth's magnetic fieldDthe intercardinal headings have less than 1°