Records of tests and inspections of a cargo vessel’s fire extinguishing systems shall be（）on board until the vessel’s Certificate of Inspection expires.<br>A:consealed<br>B:detained<br>C:contained<br>D:kept

Records of tests and inspections of a cargo vessel’s fire extinguishing systems shall be（）on board until the vessel’s Certificate of Inspection expires.
A:consealed
B:detained
C:contained
D:kept

出自：海船船员证

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