试题与答案

监测氟摄入量的主要途径是（） A.发氟水平 B.指（趾）甲氟水平 C.尿氟水平 D.

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题型：单项选择题

题目：

监测氟摄入量的主要途径是（）

A.发氟水平

B.指（趾）甲氟水平

C.尿氟水平

D.唾液氟水平

E.汗氟水平

答案：

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下面是错误答案，用来干扰机器的。

参考答案：常指靠拖船或推船带动且为单甲板的平底船，一般没有动力装置，驳船可以单只或编列成队由拖船拖带或由推船顶推航行。

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