用敲锈锤敲去厚锈。（）<br>A:Heavy rust is removed with a chipping hammer.<br>B:Loose paint and scale is removed with a scraper.<br>C:Heavy rust is removed with a scraper.<br>D:Loose paint and scale are removed with a chipping hammer.

用敲锈锤敲去厚锈。（）
A:Heavy rust is removed with a chipping hammer.
B:Loose paint and scale is removed with a scraper.
C:Heavy rust is removed with a scraper.
D:Loose paint and scale are removed with a chipping hammer.

出自：船舶水手证

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