A (n) （） is a chemical or electro-chemical attack on the metal surface which may be further increased if the sea-water is polluted.<br>A:erosion<br>B:corrosion<br>C:cavity<br>D:scouring

A (n) （） is a chemical or electro-chemical attack on the metal surface which may be further increased if the sea-water is polluted.
A:erosion
B:corrosion
C:cavity
D:scouring

出自：海船船员证

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