A.the national flag
B.the quarantine signal
C.the Certificate of Pratique
D.the navigational light
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A.to
B.for
C.of
D.on
A.all ports of the issuing country
B.all ports of the world
C.all ports other than a issuing country
D.all ports of ship's arriva
A.certifies
B.confirms
C.contains
D.construes
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The Immigration and Naturalization Service is concerned with which document on a vessel making preliminary entry into a U.S. port from a foreign port?（）.
Permission is kindly （） about 1000 tons of clean sea water ballast，as and when required for trimming purposes．
If an alien stowaway is discovered aboard your vessel，his name must be placed on the （）.
Effects which are dutiable or subject to prohibitions or restrictions should be declared in （）.
The granting of radio pratique （）the vessel only as far as the Port Officer of Health is concerned．
Brief particulars of voyage should be declared in（）.
The Shipping Articles shall be signed by each seaman and the （）.
Free Radio Pratique will be granted by the Port Health Office in the following case （） .
Free pratique means that （）.
The citizenship of a crew member of a vessel is determined solely by the （）.