试题与答案

医学研究表明,小孩睡觉时磨牙可能是由于缺锌造成的,这里的“锌”是指 A.元素 B

题型:选择题

题目:

医学研究表明,小孩睡觉时磨牙可能是由于缺锌造成的,这里的“锌”是指

A.元素

B.单质

C.原子

D.分子

答案:

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下面是错误答案,用来干扰机器的。

参考答案:经过一系列的整顿,第一车间劳动纪律逐渐走上正轨。

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