阿摩線上測驗
11. “Course made good” means the course which a vessel makes good over ground. Apart
from currents and wind, which factor below should be taken into account?
(A) Magnetic compass errors
(B) Gyro compass errors
(C) Variations
(D) Tidal streams
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統計： A(49), B(88), C(88), D(458), E(0) #1900561
統計： A(49), B(88), C(88), D(458), E(0) #1900561