The vertical movement of a vessel in the water is called().
A、pitch
B、sway
C、heave
D、roll
A、pitch
B、sway
C、heave
D、roll
A、vertically above the center of buoyancy B、vertically above the center of gravity C、at the intersection of the upright vertical centerline and the line of action of the buoyant force D、at the geometric center of the underwater volume
A、vertically above the center of buoyancy B、vertically above the center of gravity C、at the intersection of the upright vertical centerline and the line of action of the buoyant force D、at the geometric center of the underwater volume
A、A.vertically above the center of buoyancy B、B.vertically above the center of gravity C、C.at the intersection of the upright vertical centerline and the line of action of the buoyant force D、D.at the geometric center of the underwater volume
A、the horizontal component of the permanent magnetism B、deviation caused by the vessel's inclination from the vertical C、induced magnetism in the horizontal soft iron D、induced magnetism in the vertical soft iron
A、three black shapes in a vertical line; the highest and lowest are balls,and the middle one is a diamond B、three shapes in a vertical line; the highest and lowest are red balls,and the middle one is a white diamond C、three black balls in a vertical line D、two black balls in a vertical line
A、two black balls in a vertical line B、three black balls in a vertical line C、three shapes in a vertical line; the highest and lowest shall be red balls and the middle a white diamond D、three black shapes in a vertical line; the highest and lowest shall be balls and the middle one a diamond
A、vertical moment B、transverse position of the center of gravity C、inclining moment D、righting moment
A、horizontal position of the boom B、vertical position of the boom C、horizontal position of the load being lifted D、vertical position of the load being lifted
A、Greenwich celestial meridian B、hour circle of the body C、local celestial meridian D、vertical circle of the body