单项选择题
A.due B.expire C.lawful D.non-effective
The certificate of nationality （） serves as evidence of...
单项选择题The certificate of nationality （） serves as evidence of the nationality of the ship （） shows the port of registry.
A.neither，nor B.not only，but also C.not，but D.not only， and but
The certificate shall have effect （） all Chinese ports....
单项选择题The certificate shall have effect （） all Chinese ports.
A.to B.for C.in D.on
The certificate will remain in force （）July lst,2008.A....
单项选择题The certificate will remain in force （）July lst,2008.
A.in B.on C.till D.to
