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 国家开放大学 / 经济数学基础12
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下列定积分计算正确的是（ ）．











  积分
经济数学基础12
 参考答案：
 佳题速递：
  • 在平面机构中，每个构件只有3个自由度。每个平面低副（转动副和移动副）提供1个约束，每个平面高副提供2个约束。机器人技术及应用
  • 图示结构的超静定次数是（    ） 121096土木工程力学（本）
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  • 27[填空题] 接触器的额定通断能力是指主触头在规定条件下可靠接通和分断的      。可编程控制器技术
  • 3[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 243.75pt 365.25pt 455.25pt"><span style="FONT-FAMILY: 宋体">幂级数</span><img style="VERTICAL-ALIGN: middle" width="130" height="43" src="http://www.jxjypt.cn/Content/Scripts/ewebeditor10/uploadfile/exam/201302/20130226102622237001.gif"><span style="FONT-FAMILY: 宋体">在（</span><img style="VERTICAL-ALIGN: middle" width="52" height="17" src="http://www.jxjypt.cn/Content/Scripts/ewebeditor10/uploadfile/exam/201302/20130226102622083002.gif"><span style="FONT-FAMILY: 宋体">）上的和函数是</span><span>&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="FONT-FAMILY: 宋体">（&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 243.75pt 365.25pt 455.25pt"><span>A</span><span style="FONT-FAMILY: 宋体">．</span><img style="VERTICAL-ALIGN: middle" width="32" height="17" src="http://www.jxjypt.cn/Content/Scripts/ewebeditor10/uploadfile/exam/201302/20130226102622914003.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; </span>B</span><span style="FONT-FAMILY: 宋体">．</span><img style="VERTICAL-ALIGN: middle" width="35" height="14" src="http://www.jxjypt.cn/Content/Scripts/ewebeditor10/uploadfile/exam/201302/20130226102622956004.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; </span>C</span><span style="FONT-FAMILY: 宋体">．</span><img style="VERTICAL-ALIGN: middle" width="60" height="23" src="http://www.jxjypt.cn/Content/Scripts/ewebeditor10/uploadfile/exam/201302/20130226102622837005.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; </span>D</span><span style="FONT-FAMILY: 宋体">．</span><img style="VERTICAL-ALIGN: middle" width="14" height="20" src="http://www.jxjypt.cn/Content/Scripts/ewebeditor10/uploadfile/exam/201302/20130226102622366006.gif"></p> A.A B.B C.C D.D高等数学Ⅰ
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