27. Boarding speed means the speed of a vessel _____ to that of a pilot boat at which the
pilot can safely embark/disembark.
(A) intend
(B) steering
(C) refer
(D) adjusted
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統計: A(65), B(68), C(66), D(339), E(0) #2051837
統計: A(65), B(68), C(66), D(339), E(0) #2051837