题目内容

常见的金属的防腐方法有以下()A B C D

A. 非金属保护层
B. 金属保护层
C. 电化保护
D. 吸氧保护

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金属发生钝化的电势叫钝化电势。

A. 对
B. 错

The debate is onlyby authorized managers.

A. proved
B. accessible
C. approved
D. access

This traditional is of indigo blue.

A. clothes
B. diversity
C. costume
D. institution

Hethat he was innocent.

A. announced
B. declared
C. disclosed
D. admitted

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