There is a possibility that small vessel，ice and other floating objects may not be（）by radar at an adequate range.<br>A:reflect<br>B:shown<br>C:detected<br>D:defected

There is a possibility that small vessel，ice and other floating objects may not be（）by radar at an adequate range.
A:reflect
B:shown
C:detected
D:defected

出自：海船船员证

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