When a wind force causes a floating ship to heel to a static angle，the ______．A.Centers of buoyancy and gravity are in the same vertical lineB.Righting moment equals the wind-heeling momentC.Downflooding point is below waterD.Deck-edge immersion occurs
When a wind force causes a floating ship to heel to a static angle，the ______．
A.Centers of buoyancy and gravity are in the same vertical line
B.Righting moment equals the wind-heeling moment
C.Downflooding point is below water
D.Deck-edge immersion occurs
相关考题：
In the absence of external forces，adding weight on one side of a floating vessel causes the vessel to ().A.heel until the angle of loll is reachedB.list until the center of buoyancy is aligned vertically with the center of gravityC.trim to the side opposite TCG until all moments are equalD.decrease draft at the center of flotation
The numeral in the center of a wind rose circle on a pilot chart indicates the ______.A.total number of observationsB.average wind force on the Beaufort scaleC.average wind force in knotsD.percentage of calms
Among the possible causes of unexpected constant inclination of the floating ship is ______．A.Consumption of on board liquidsB.Miscalculation of loadsC.Liquid transfer through open valvesD.Flooding due to hull damage
For a floating vessel, the center of buoyancy and the metacenter are in the line of action of the buoyant force ______.A.only when there is positive stabilityB.only when there is negative stabilityC.only when there is neutral stabilityD.at all times
有时风大流急，船舶靠码头时必须掉头顶流。（）A、A ship has to turn to stem the tide because the wind is strong when she is getting alongside a wharf.B、Sometimes the wind is strong and the current is rough, so a ship has to turn to stem the tide when she is getting alongside a wharf.C、The wind is big, a ship must get alongside a wharf so she has to turn to stem the tide.D、A ship has to turn to stem the tide so she can get alongside a wharf.
单选题The angle to which a floating ship，with a negative initial metacentric height，lies while at rest in still water is the angle of（）.AtrimByawCheelDloll
单选题When taking soundings on a floating ship，the tape should be lowered and brought back quickly to（）.Areduce the time the sounding tube is openBavoid creating a sparkClessen the effect of roll or pitch on the readingDlessen the effect of heave on the reading
单选题The angle of loll is a stability term which applies to a floating ship with（）.Aoff-center loadingBstiff characteristicsCexcessive pitch or rollDnegative initial stability
单选题For a ship with longitudinal inclination，an increase in GML causes（）.Alist to stabilize at an angle of lollBtrim to stabilize at an angle of lollCtrim to increaseDtrim to decrease
单选题When will the float-free emergency position indicating radio beacon be activated after abandoning ship?（）AImmediately after floating freeBAfter about one hour when the salt water activates the batteryCOnly when keyed by the radar of another vesselDOnly when daylight activates the photovoltaic cell
单选题The apparent wind can be zero when the true wind is from（）.Aahead and equal to the ship's speedBastern and equal to the ship's speedCahead and equal to twice the ship's speedDastern and equal to twice the ship's speed
单选题In small-angle stability，when external forces exist，the buoyant force is assumed to act vertically upwards through the center of buoyancy and through the（）.Acenter of gravityBcenter of flotationCmetacenterDmetacentric height
单选题In snall angle stability, when external forces exist , the buoyant force is assumed to act vertically upwards through the center of buoyancy and through the（）.Acenter of gravityBcenter of flotationCmetacenterDmetacentric height
单选题In rough weather，when a ship is able to maneuver，it is best to launch a lifeboat（）.Aon the lee sideBon the windward sideCwith the wind dead aheadDwith the wind from astern
单选题A floating ship with an initial negative metacentric height（）.Awill capsizeBwill incline furtherCmay lie at an angle of lollDmay be initially level
单选题When force of winds reaches 10-11 in Beaufort scale，we usually call such wind（）.AGaleBStormCHurricaneDTyphoon
单选题For a floating vessel, the center of buoyancy and the metacenter are in the line of action of the buoyant force（）.Aonly when there is positive stabilityBonly when there is negative stabilityConly when there is neutral stabilityDat all times
单选题When evacuating a seaman by helicopter lift，which course should the ship take?（）ADownwind so that the apparent wind is close to nilBA course that will keep a free flow of air，clear of smoke，over the hoist areaCA course that will have the hoist area in the lee of the superstructureDWith the wind dead ahead because the helicopter is more maneuverable when going into the wind
单选题The numeral in the center of a wind rose circle on a pilot chart indicates the （）.Atotal number of observationsBaverage wind force on the Beaufort scaleCaverage wind force in knotsDpercentage of calms
单选题When a wind force causes a floating ship to heel to a static angle，the（）.Acenters of buoyancy and gravity are in the same vertical lineBrighting moment equals the wind-heeling momentCdownflooding point is below waterDdeck-edge immersion occurs
单选题In the absence of external forces，adding weight on one side of a floating vessel causes the vessel to（）.Aheel until the angle of loll is reachedBlist until the center of buoyancy is aligned vertically with the center of gravityCtrim to the side opposite TCG until all moments are equalDdecrease draft at the center of flotation
单选题The centre of lateral resistance is（）.Athe center of the hydrodynamic forces acting on the underwater hull to resist the effect of the windBthe point of influence of wind on the shipCthe pivot pointDthe point on the ship's above-water structure upon which the whole force of the wind can be considered an act
单选题When referring to dry bulk cargoes，the term “flow state”（）.Adesignates the state of a commodity when the ship is heeled past the angle of reposeBrelates to the suitability of loading a cargo by flowing down inclined chutesCrefers to the saturation of a dry bulk product with water to the point where it acts as a liquidDrelates to the minimum granule size of a particular product where it will flow like a liquid at an angle of 30°
单选题The static stability curve for a given vessel peaks at 34°. For this ship，the danger angle for a permanent list would be about（）.A8.5°B17°C34°D51°
单选题有时风大流急，船舶靠码头时必须掉头顶流。（）AA ship has to turn to stem the tide because the wind is strong when she is getting alongside a wharf.BSometimes the wind is strong and the current is rough, so a ship has to turn to stem the tide when she is getting alongside a wharf.CThe wind is big, a ship must get alongside a wharf so she has to turn to stem the tide.DA ship has to turn to stem the tide so she can get alongside a wharf.
单选题When will the float-free emergency position indicating radiobeacon be activated after abandoning ship? （）AImmediately after floating freeBAfter about one hour when the salt water activates the batteryCOnly when keyed by the radar of another vesselDOnly when daylight activates the photovoltaic cell