单项选择题
A.compass error B.latitude C.variation D.deviation
The reaction of a gyrocompass to an applied force is kn...
单项选择题The reaction of a gyrocompass to an applied force is known as（）.
A.precession B.earth rate C.gyroscopic inertia D.gravity effect
The quadrantal spheres are used to（）.A.remove deviation...
单项选择题The quadrantal spheres are used to（）.
A.remove deviation on the intercardinal headings B.remove deviation on the cardinal compass headings C.remove heeling error D.compensate for induced magnetism in vertical soft iron
The principal purpose of magnetic compass adjustment is...
单项选择题The principal purpose of magnetic compass adjustment is to（）.
A.reduce the variation as much as possible B.reduce the deviation as much as possible C.reduce the magnetic dip as much as possible D.allow the compass bowl to swing freely on its gimbals
