单项选择题
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
The International Loadline Certificate is a document in...
单项选择题The International Loadline Certificate is a document indicating （）of the various loadlines of the vessel.
A.functions B.importances C.actions D.positions
