gyrocompass（）

Gyrocompass repeaters reproduce the indications of the master gyrocompass. They are ____.

A.accurate only in the Polar regions

B.accurate electronic servomechanisms

C.hand operated

D.accurate only if the vessel is underway

__（电罗经）can tell us true north

A.VHF

B.Radar

C.Chart

D.Gyro-compass

Before switching on gyro-compass, you should make sure that the power supply on board is_______.

A.high or low

B.AC or DC

C.srong or weak

D.on or off

My gyro-compass error is ().

A.east two degrees

B.two degrees east

C.two east degrees

D.two-degrees east

At the master gyrocompass，the compass card is attached to the ______．

A.Spider element

B.Sensitive element

C.Link arm

D.Pickup transformer

Which statement about the gyrocompass is FALSE ________．

A.Its accuracy remains the same at all latitudes

B.It seeks the true meridian

C.It can be used near the Earth's magnetic poles

D.If an error exists，it is the same on all headings

A system of reservoirs and connecting tubes in a gyro compass is called a ______．

A.Spider element

B.Mercury ballistic

C.Gyrotron

D.Rotor

Indications of the master gyrocompass are sent to remote repeaters by the ______.

A.follow-up system

B.transmitter

C.phantom element

D.azimuth motor

The most accurate method of determining gyrocompass error while underway is by ______．

A.Comparing the gyro azimuth of a celestial body with the computed azimuth of the body

B.Comparing the gyro heading with the magnetic compass heading

C.Determining from the chart the course made good between celestial fixes

D.It cannot be determined accurately at sea due to drift of unknown currents

A Forty-Foot Auto Frame（FAF）is a _______．

A.Cargo unit

B.Dangerous cargo container

C.Doppler speed log

D.Gyro-compass and autopilot