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XHTML 文档中哪些元素是强制性的?

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2021-07-17 19:21
<span style、"font-family: Calibri; font-size: small;">doctype</span><span style="font-family: 宋体; font-size: small;">、</span><span style="font-family: Calibri; font-size: small;">html </span><span style="font-family: 宋体; font-size: small;">以及</span><span style="font-family: Calibri; font-size: small;"> body</span>
<span style、"font-family: Calibri; font-size: small;">doctype</span><span style="font-family: 宋体; font-size: small;">、</span><span style="font-family: Calibri; font-size: small;">html</span><span style="font-family: 宋体; font-size: small;">、</span><span style="font-family: Calibri; font-size: small;">head </span><span style="font-family: 宋体; font-size: small;">以及</span><span style="font-family: Calibri; font-size: small;"> body</span>
<span style、"font-family: Calibri; font-size: small;">doctype</span><span style="font-family: 宋体; font-size: small;">、</span><span style="font-family: Calibri; font-size: small;">html</span><span style="font-family: 宋体; font-size: small;">、</span><span style="font-family: Calibri; font-size: small;">head</span><span style="font-family: 宋体; font-size: small;">、</span><span style="font-family: Calibri; font-size: small;">body </span><span style="font-family: 宋体; font-size: small;">以及</span><span style="font-family: Calibri; font-size: small;"> title</span>
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正确答案
doctypehtmlheadbody 以及 title

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