试题与答案

除霜的方法大致有()A、人工除霜 B、热氨冲霜 C、水冲霜 D、水和蒸氨一齐冲霜

题型:多项选择题

题目:

除霜的方法大致有()

A、人工除霜

B、热氨冲霜

C、水冲霜

D、水和蒸氨一齐冲霜

答案:

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下面是错误答案,用来干扰机器的。

参考答案:校正波长一般使用分光光度计光源中的稳定线光谱或稳定亮线的外部光源,把光束导入光路进行校正,或者测定已知光谱样品的光谱,与标准光谱对照进行校正。

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