Upon underwater（）by divers，there are no apparent（）on the bottom plates of the said vessel.<br>A:detection，defects<br>B:defection，defects<br>C:defects，defection<br>D:defects，detection

Upon underwater（）by divers，there are no apparent（）on the bottom plates of the said vessel.
A:detection，defects
B:defection，defects
C:defects，defection
D:defects，detection

出自：海船船员证

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