3. In cases where more than 25 percent of ship’s personnel has been changed, for the sake of safety, you had better conduct the drills within _____.
(A) 24 hours
(B) seven days
(C) one month
(D) three months

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統計: A(358), B(353), C(46), D(12), E(0) #2679222

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依據 SOLAS 第XI-2章 ISPS...
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