單項(xiàng)選擇題

TheSafetyManagementCertificateshouldbeissuedtoashipforaperiodwhichshouldnotexceed（）yearsbytheAdministrationoranorganizationrecognizedbytheAdministrationor,attherequestoftheAdministration，byanotherContractingGovernment.

A.five
B.six
C.seven
D.eight

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