单项选择题

This Certificate will remain in force until May 1,2009.This Sentence refers to （） of the Certificate.

A.the validity
B.the time
C.the date
D.the issue

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The International Loadline Certificate is a document indicating （）of the various loadlines of the vessel.

A.functions
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单项选择题
The certificate will remain in force （）July lst,2008.

A.in
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C.till
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