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单选题
353. Alodizing is a method of corrosion protection by the formation of a hard, airtight oxide coating on the surface of aluminium alloy parts by chemical means
A
The oxide coating on the surface of aluminium alloy parts can be formed by physical means.
B
The oxide coating on the surface of aluminium alloy parts acts the function of corrosion protection.
C
The aluminium alloy can protect the oxide coating from corrosion.
答案解析
正确答案：B
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