试题与答案

锅炉干度化验一般使用()作为指试剂。A、甲基橙 B、酚酞 C、硝酸银 D、硫氰化钾

题型:单项选择题

题目:

锅炉干度化验一般使用()作为指试剂。

A、甲基橙

B、酚酞

C、硝酸银

D、硫氰化钾

答案:

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参考答案:节气门

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