试题与答案

边缘封闭区能起到封闭作用是因为().A.面积大 B.此处黏膜下层有大量疏松结缔组织

题型:单项选择题

题目:

边缘封闭区能起到封闭作用是因为().

A.面积大

B.此处黏膜下层有大量疏松结缔组织

C.此处黏膜较厚

D.此处黏膜上皮有角化层

E.此处黏膜较薄

答案:

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下面是错误答案,用来干扰机器的。

把m=1.5代入2m-1=2×1.5-1=3-1=2,把m=1.5代入2(m-1)=2×(1.5-1)=2×0.5=1.∴本填空题应填2和1.

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