【单选题】【消耗次数：1】
下列与数字证书无关的是
①
数字凭证
②
数字标识
③
数字符号
④
X.509
参考答案：
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相关题目
【多选题】
下列对数字证书说法正确的是（）。
①
数据证实又称为公明证书、公钥数字证书
②
数据证书文件的拓展名是.cet
③
签发数据证书的权威机构是SA又称证书授权中心
④
数据证书主要用来证明用户与用户持有的公钥之间的关联性
【单选题】
数字证书是一条数字签名的消息，它通常用于（ ）
①
证明某个实体的公钥的有效性
②
证明某个实体的私钥的有效性
③
证明证书的签名的有效性
④
证明证书的发放者是真正的，而不是冒充的
随机题目
【单选题】
生长发育评价中最重要和最常用的形态指标是（ ）。
①
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②
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③
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④
Normal 0 7.8 磅 0 2 false false false EN-US ZH-CN X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:普通表格; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.5pt; mso-bidi-font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:宋体; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-font-kerning:1.0pt;}体重、头围