The speed of a vessel adjusted to that of a pilot boat at which the pilot can safely embarkis______.(1.0)
A.ground speed B.boarding speed C.relative speed D.vessel speed正确答案B
The speed of a vessel adjusted to that of a pilot boat at which the pilot can safely embarkis______.(1.0)
A.ground speed B.boarding speed C.relative speed D.vessel speed正确答案B
