题目内容

金属发生钝化的电势叫钝化电势。

A. 对
B. 错

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The debate is onlyby authorized managers.

A. proved
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C. approved
D. access

This traditional is of indigo blue.

A. clothes
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D. institution

Hethat he was innocent.

A. announced
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C. disclosed
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A. seek
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D. explore