All NAVTEX messages（）owing to their nature of importance.<br>A:can suppress<br>B:can be suppressed<br>C:can not be suppressed<br>D:are to be suppressed

All NAVTEX messages（）owing to their nature of importance.
A:can suppress
B:can be suppressed
C:can not be suppressed
D:are to be suppressed

出自：海船船员证

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