Upon the completion of required tests, a （） should be placed on each extinguisher, showing the date and the person who completed the tests.<br>A:cap<br>B:disc<br>C:tag<br>D:cover

Upon the completion of required tests, a （） should be placed on each extinguisher, showing the date and the person who completed the tests.
A:cap
B:disc
C:tag
D:cover

出自：海船船员证

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