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The vertical component of the Earth’s magnetic field causes induced magnetism in vertical soft iron. This changes with latitude. What corrects for this coefficient of the deviation? （）
A . The Flinders bar
B . The heeling magnet
C . Quadrantal soft iron spheres
D . Bar magnets in the binnacle
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For an upright vessel, draft is the vertical distance between the keel and the （）.
A . waterline
B . freeboard deck
C . Plimsoll mark
D . amidships sectio
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Aboard a vessel, dividing the sum of the vertical moments by the total weight yields the vessel’s（）.
A . height of the center of gravity A.LCG
B . vertical moment
C . righting moment
D . inclining moment
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The vertical movement of a vessel in the water is called（）.
A . pitch
B . sway
C . heave
D . roll
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For an upright vessel，draft is the vertical distance between the keel and the（）.
A . waterline
B . freeboard deck
C . plimsoll mark
D . amidships sectio
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Aboard ship，vertical flat plates running transversely and connecting the vertical keel to the margin plates are called（）.
A . floors
B . intercostals
C . girders
D . stringer
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Angular motion about the vertical axis of a vessel is called（）.
A . yaw
B . surge
C . sway
D . roll
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The vertical angle between the horizontal and the magnetic line of force is the（）.
A . elevation
B . magnetic angle
C . vertical angle
D . di
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At the magnetic equator there is no induced magnetism in the vertical soft iron because（）.
A . the lines of force cross the equator on a 0°-180°alignment
B . the quadrantal error is 0°
C . there is no vertical component of the Earth's magnetic field
D . the intercardinal headings have less than 1°
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They（）the train until it disappeared in the distance
A . saw
B . watched
C . noticed
D . observed
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Air gap is the vertical distance between the bottom of the hull and the（）.
A . still water level
B . wave crest
C . wave crest plus the charted water depth and tidal corrections
D . wave crest plus the charted water depth and tidal correction and storm surge
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The height of a wave is the vertical distance（）.
A . from the still water plane to the crest
B . from the still water plane to the trough
C . from crest to trough
D . between water levels at one-quarter of the wave's length
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A celestial body will cross the prime vertical circle when the latitude is numerically （）.
A . Greater than the declination and both are of the same name
B . Less than the declination and both are of the same name
C . Greater than the declination and both are of contrary name
D . Less than the declination and both are of contrary name
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In which voyage, between two points, is the rhumb line distance not approximately the same as the great circle distance?（）.
A . The two points are in low latitudes in the same hemisphere
B . The two points are in high latitudes in the same hemisphere
C . The two points are near the equator, but in different hemispheres
D . One point is near the equator, one point is in a high latitude, and both are near the 180th meridia
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Vertical structural members attached to the floors that add strength to the floors are called（）.
A . boss plates
B . buckler plates
C . stiffeners
D . breast hook
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“A centrifuge consists of an electric motor driving a vertical shaft on the top of which is mounted the bowl assembly”.According to this sentence, we can know that is mounted on the top of the vertical shaft（）
A . a centrifuge
B . an electric motor
C . a bowl assembly
D . a driving motor
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The vertical distance between G and M is used as a measure of（）.
A . stability at all angles of inclination
B . initial stability
C . stability at angles less than the limit of positive stability
D . stability at angles less than the downflooding angle
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Distance lends ＿to the view.
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8. Which of the following is not true of “vertical integration”?
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166. Wave height refers to the vertical distance from ______.
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Which of the following is true of vertical marketing systems?
A、 Producers, wholesalers, and retailers act as a unified system.
B、 Channel members have no control over each other.
C、 Channel conflict is governed by informal mechanisms.
D、 The system is dominated by the consumer.
E、 Channel members work independently with no cooperation from other members.
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sel is vertically aligned with the ______．◑A.longitudinal centerline◑B.center of flotation◑C.original vertical centerline◑D.metacenter
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In which voyage，between two points，is the rhumb line distance NOT approximately the same as the great circle distance？_____.
A.The two points are in low latitudes in the same hemisphere
B.The two points are in high latitudes in the same hemisphere
C.The two points are near the equator，but in different hemispheres
D.One point is near the equator，one point is in a high latitude，and both are near the 180th meridian
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Find the center and vertices of the ellipse. （）
A．center: vertices:
B．center: vertices:
C．center: vertices:
D．center: vertices:
E．center: vertices:
