21. Suppose a crew onboard a vessel was injured, what kind of assistance would be the most
appropriate action?
(A) Pilotage service
(B) Tug assistance
(C) Helicopter operation
(D) Customs inspection
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統計: A(22), B(70), C(466), D(29), E(0) #3155827
統計: A(22), B(70), C(466), D(29), E(0) #3155827