阿摩線上測驗
31 When navigating, a coast guard officer should pay close attention to weather conditions by ________ changes in wind, visibility and sea state.
(A) guessing
(B) ignoring
(C) monitoring
(D) triggering
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統計： A(0), B(1), C(5), D(1), E(0) #3462285
統計： A(0), B(1), C(5), D(1), E(0) #3462285
