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船舶通訊與航海英文(概要)題庫下載題庫

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39. When the general emergency alarm is sounded, which consists of seven short blasts and on_______e blast, all crew members have to go to their assembly station.
(A) prolonged 。
(B) prolong
(C) long
(D) longed



39. Whenthe general emergency alarm is s..-阿摩線上測驗