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8[填空题]
( )发光二极管数码显示器需选用有效输出为高电平的七段显示译码器来驱动。
  积分
数学逻辑
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  • 4[单选题] <p style="TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify; TEXT-INDENT: 21pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: Calibri; FONT-SIZE: 10.5pt; tab-stops: 132.0pt 249.0pt 375.65pt 455.25pt"><span style="FONT-FAMILY: 宋体">设常数</span><img style="VERTICAL-ALIGN: middle" width="35" height="17" src="http://www.jxjypt.cn/Content/Scripts/ewebeditor10/uploadfile/exam/201302/20130226102041186001.gif"><span style="FONT-FAMILY: 宋体">，几何级数</span><img style="VERTICAL-ALIGN: middle" width="46" height="43" src="http://www.jxjypt.cn/Content/Scripts/ewebeditor10/uploadfile/exam/201302/20130226102041074002.gif"><span style="FONT-FAMILY: 宋体">收敛，则</span><img style="VERTICAL-ALIGN: middle" width="12" height="14" src="http://www.jxjypt.cn/Content/Scripts/ewebeditor10/uploadfile/exam/201302/20130226102041427003.gif"><span style="FONT-FAMILY: 宋体">应满足</span><span>&nbsp;&nbsp;</span><span style="FONT-FAMILY: 宋体">（&nbsp;&nbsp; </span><span style="FONT-FAMILY: 宋体">）</span></p> <p style="TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify; TEXT-INDENT: 21pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: Calibri; FONT-SIZE: 10.5pt; tab-stops: 132.0pt 249.0pt 375.65pt 455.25pt"><span>A</span><span style="FONT-FAMILY: 宋体">．</span><img style="VERTICAL-ALIGN: middle" width="35" height="20" src="http://www.jxjypt.cn/Content/Scripts/ewebeditor10/uploadfile/exam/201302/20130226102041438004.gif"><span><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>B</span><span style="FONT-FAMILY: 宋体">．</span><img style="VERTICAL-ALIGN: middle" width="63" height="20" src="http://www.jxjypt.cn/Content/Scripts/ewebeditor10/uploadfile/exam/201302/20130226102041563005.gif"><span><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>C</span><span style="FONT-FAMILY: 宋体">．</span><img style="VERTICAL-ALIGN: middle" width="43" height="20" src="http://www.jxjypt.cn/Content/Scripts/ewebeditor10/uploadfile/exam/201302/20130226102041568006.gif"><span><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>D</span><span style="FONT-FAMILY: 宋体">．</span><img style="VERTICAL-ALIGN: middle" width="35" height="20" src="http://www.jxjypt.cn/Content/Scripts/ewebeditor10/uploadfile/exam/201302/20130226102041421007.gif"></p> A.A B.B C.C D.D高等数学Ⅰ
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