A,B为正整数集,函数是()
A.单射
B.满射
C.既是单射又是满射
D.既不是单射也不是满射
- · 有4位网友选择 C,占比44.44%
- · 有3位网友选择 A,占比33.33%
- · 有1位网友选择 B,占比11.11%
- · 有1位网友选择 D,占比11.11%
A.单射
B.满射
C.既是单射又是满射
D.既不是单射也不是满射
B.11111010
C.宋体;mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"TimesNewRoman";mso-bidi-theme-font:minor-bidi; mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">1000
D.11111011
B.宋体;mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"TimesNewRoman";mso-bidi-theme-font:minor-bidi; mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">16
C.宋体;mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"TimesNewRoman";mso-bidi-theme-font:minor-bidi; mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">10
D.32
B.浮点数
C.mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">汉字和西文字符
D.mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">各种文字
B.mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">自组织功能
C.mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">碰撞避免机制 minor-latin;mso-fareast-font-family:宋体;mso-fareast-theme-font:minor-fareast; mso-hansi-theme-font:minor-latin;mso-bidi-font-family:"TimesNewRoman"; mso-bidi-theme-font:minor-bidi;mso-ansi-language:EN-US;mso-fareast-language: ZH-CN;mso-bidi-language:AR-SA">
D.mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">数据传输机制
B.依时赴约
C.稍晚一点到达
D.以上都可以
A、f不是单射
B、f不是是满射
C、f既是单射又是满射
D、f既不是单射也不是满射
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