Canvas sails，when not in use，may be damaged if（）.<br>A:left in the sunlight<br>B:stowed wet<br>C:folded frequently<br>D:washed with soap and water

Canvas sails，when not in use，may be damaged if（）.
A:left in the sunlight
B:stowed wet
C:folded frequently
D:washed with soap and water

出自：海船船员证

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