试题与答案

测定油品试样视密度时,玻璃量筒内径应至少比所用石油密度计的外径大()。A.20mm

题型:单项选择题

题目:

测定油品试样视密度时,玻璃量筒内径应至少比所用石油密度计的外径大()。

A.20mm

B.25mm

C.30mm

D.50mm

答案:

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