船上通常會利用汽笛或警鈴施放哪一種形式的棄船信號？ (A)四短聲和一長聲 (B)六短聲和兩長聲 (C)七短聲和一長聲 (D)至少維持10秒鐘的連續聲響

問題詳情

1. 船上通常會利用汽笛或警鈴施放哪一種形式的棄船信號？
(A)四短聲和一長聲
(B)六短聲和兩長聲
(C)七短聲和一長聲
(D)至少維持10秒鐘的連續聲響

參考答案

答案：C
難度：計算中-1
書單：沒有書單，新增

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