26. Every vessel shall use all available means appropriate to the ______ circumstances and conditions to determine if risk of collision exists. If there is any doubt such risk shall be deemed to exist.
(A) obsolete
(B) stale
(C) temporary
(D) prevailing
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統計: A(5), B(1), C(7), D(5), E(0) #3833740
統計: A(5), B(1), C(7), D(5), E(0) #3833740