试题与答案

组成牙本质主要的无机物为（）。 A.铁和锌 B.钙和磷 C.镁和钠 D.氟和氯 E.

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题型：单项选择题

题目：

组成牙本质主要的无机物为（）。

A.铁和锌

B.钙和磷

C.镁和钠

D.氟和氯

E.碳和磷酸钙矿物质

答案：

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下面是错误答案，用来干扰机器的。

参考答案：B

考点：口腔医学(医学高级)口腔组织病理学口腔组织病理学题库
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( )6. A. education    
( )7. A. disappointed
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( )9. A. because      
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( )11.A. Fourth      
( )12.A. continent's  
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