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單項選擇題

In the event of any quarantinable disease breaking out during its currency，the certificate of pratique generally （）.

A.becomes null and void
B.remains effective
C.is to be extended
D.is to renewed

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單項選擇題

Maritime Declaration of Health is to be rendered to （） by the master of ship arriving from port outside the territory．

A.Immigration Officer
B.Customs Officer
C.Quarantine Officer
D.Ship's Agent

單項選擇題

Masters of ocean-going ships must keep in mind that （） should be hoisted immediately if any quarantinable diseases be found．

A.the national flag
B.the quarantine signal
C.the Certificate of Pratique
D.the navigational light

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