The mariner must be the final judge of the reliance he can place on the information given in the Admiralty charts and other publications,since they（）.<br>A:may always be complete and up-to-date<br>B:may not always be complete and up-to-date<br>C:may sometimes be complete and up-to-date<br>D:may not sometimes be complete and up-to-date

The mariner must be the final judge of the reliance he can place on the information given in the Admiralty charts and other publications,since they（）.
A:may always be complete and up-to-date
B:may not always be complete and up-to-date
C:may sometimes be complete and up-to-date
D:may not sometimes be complete and up-to-date

出自：海船船员证

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