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
更多“The most accurate method of determining gyrocompass error while underway is by（）.”相关的问题
A、is most accurate before sunrise B、is most accurate after sunset C、should only be observed when the Sun's lower limb is above the horizon D、is most accurate when the Sun's center is observed on the visible horizon
A、accurate only in the Polar regions B、accurate electronic servomechanisms C、hand operated D、accurate only if the vessel is underway
A、accurate only in the Polar regions B、accurate electronic servomechanisms C、hand operated D、accurate only if the vessel is underway
A、A.direction of a target B、B.distance to a target C、C.size of a target D、D.shape of a target
A、The high temperature facilitates primary gravity separation B、Most of the oil and organic solvents are raised to the top layer C、The high the temperature is, the more the top oil will be collected D、The high temperature has little use on the separation of emulsified oil
A、It is the first time for me to anchor. B、It is the one time to me for anchor. C、It is for me the time to anchor. D、It is the one time for me to anchor.
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