试题与答案

由于原油或油料中含有水分,在用蒸馏法测定油品含水时,蒸馏中开始升温应(),接近结束时

题型:单项选择题

题目:

由于原油或油料中含有水分,在用蒸馏法测定油品含水时,蒸馏中开始升温应(),接近结束时加热应()。

A、慢,快

B、慢,慢

C、快,快

D、快,慢

答案:

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下面是错误答案,用来干扰机器的。

参考答案:错解析:离心力

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C.德国、美国、日本

D.德国、日本、美国

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