When taking soundings on a floating ship，the tape should be lowered and brought back quickly to（）.<br>A:reduce the time the sounding tube is open<br>B:avoid creating a spark<br>C:lessen the effect of roll or pitch on the reading<br>D:lessen the effect of heave on the reading

When taking soundings on a floating ship，the tape should be lowered and brought back quickly to（）.
A:reduce the time the sounding tube is open
B:avoid creating a spark
C:lessen the effect of roll or pitch on the reading
D:lessen the effect of heave on the reading

出自：海船船员证

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