Induced magnetism is found in（）.

A . If the quadrantal spheres are out as far as possible replace them with smaller spheres B . If the quadrantal spheres are in as far as possible remove one of the spheres C . If the quadrantal spheres are in as far as possible replace them with smaller spheres D . If the quadrantal spheres are out as far as possible，move the quadrantal spheres i

A . An agonic line B . The magnetic equator C . A magnetic meridian D . All of the above

A . The Flinders bar B . The heeling magnet C . Quadrantal soft iron spheres D . Bar magnets in the binnacle

A . variation B . deviation C . compass error D . drift

A . fore-and-aft and athwartships magnets B . dip needle and heeling magnet C . heeling magnet and Flinders bar D . Flinders bar and quadrantal sphere

A . Quadrantal spheres B . Heeling magnets C . Athwartships magnets D . Fore-and-aft magnet

A . supercharging B . scavenging C . turbulence D . swept volume charging

A . geographic pole and the magnetic pole B . lubber's line and true north C . horizontal and the magnetic line of force D . compass heading and the magnetic heading

A . zero B . equal to variation C . eliminated by adjusting the compass D . constant at any geographical locatio

A . Move the quadrantal spheres closer to the compass B . Raise the heeling magnet if the red end is up C . Remove some of the Flinders bar D . Raise or lower the athwartship magnet

A . operation of electrical equipment and generators on board ship B . the earth's magnetic field affecting the ship's hard iron during construction C . the horizontal component of the earth's magnetic field acting on the horizontal soft iron D . the vertical component of the earth's magnetic field acting on the vertical soft iro

A . If the blue ends of the magnets are aft，and the fore-and-aft tray is at the top，you should add some magnets. B . If the blue ends of the magnets are aft you should lower the fore-and-aft tray C . If the blue ends of the magnets are aft，and the fore-and-aft tray is at the top，you should reverse the magnets D . If the blue ends of the magnets are forward，and the fore-and-aft tray is at the bottom，you should add some magnet

A . If the quadrantal spheres are all the way out，replace them with smaller spheres B . If the quadrantal spheres are all the way in，replace them with larger spheres C . If the quadrantal spheres are all of the way out，move the spheres in D . If the quadrantal spheres are all the way out，replace them with larger spheres.

A . increases B . remains the same C . decreases D . is unimportant and may be neglected

A . will add to B . will subtract from C . may add to or subtract from D . will not change

A . Flinders bar B . Soft iron spheres C . Fore-and-aft permanent magnets in their trays D . Heeling magnet

A . Along the magnetic equator B . Connected by the isoclinal line C . The isopors D . The magnetic pole

A . Compass error and variation are equal B . Compass north will be true north C . Variation will equal deviation D . There will be no compass error

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&deg

A . Magnetic materials of the same polarity repel each other and those of opposite polarity attract B . The Earth's magnetic lines of force are parallel to the surface of the Earth C . Magnetic meridians connect points of equal magnetic variation D . The compass needle(s) will，when properly compensated，lie parallel to the isogonic lines of the Earth

A . It compensates for the error caused by the vertical component of the Earth's magnetic field B . It compensates for error caused by the heeling of a vessel C . It compensates for quadrantal deviation D . It is only needed in equatorial water

A . opposite polarity B . the same polarity C . negative polarity D . positive polarity

A . by an fuel valve B . through an inlet valve C . with an exhaust valve D . from an outlet valve