用min{a，b}表示a，b两个数中的最小值，若函数<a href="https://img.examcoo.com/paper/100001/201006/11142320.gif" rel="lightbox" target="_blank"><img style="BORDER-BOTTOM: 0px; BORDER-LEFT: 0px; BORDER-TOP: 0px; BORDER-RIGHT: 0px" hspace="0" align="absMiddle" width="154" height="26" _djrealurl="/uploads/3/100001/images/201006/11142320.gif" src="https://img.examcoo.com/paper/100001/201006/11142320.gif"></a>的图像关于直线  <a href="https://img.examcoo.com/paper/100001/201006/11142324.gif" rel="lightbox" target="_blank"><img style="BORDER-BOTTOM: 0px; BORDER-LEFT: 0px; BORDER-TOP: 0px; BORDER-RIGHT: 0px" hspace="0" align="absMiddle" width="50" height="41" _djrealurl="/uploads/3/100001/images/201006/11142324.gif" src="https://img.examcoo.com/paper/100001/201006/11142324.gif"></a>对称，则t的值为 

试卷相关题目

• 1在某种信息传输过程中，用4个数字的一个排列（数字允许重复）表示一个信息，不同排列表示不同信息。若所用数字只有0和1，则与信息0110至多有两个对应位置上的数字相同的信息个数为

  A.10

  B.11

  C.12

  D.15

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• 2在△ABC中，角A，B，C所对的边长分别为a，b，c，若 <a href="https://img.examcoo.com/paper/100001/201006/11142309.gif" rel="lightbox" target="_blank"><img style="BORDER-BOTTOM: 0px; BORDER-LEFT: 0px; BORDER-TOP: 0px; BORDER-RIGHT: 0px" hspace="0" align="absMiddle" width="72" height="21" _djrealurl="/uploads/3/100001/images/201006/11142309.gif" src="https://img.examcoo.com/paper/100001/201006/11142309.gif"></a> ， <a href="https://img.examcoo.com/paper/100001/201006/11142314.gif" rel="lightbox" target="_blank"><img style="BORDER-BOTTOM: 0px; BORDER-LEFT: 0px; BORDER-TOP: 0px; BORDER-RIGHT: 0px" hspace="0" align="absMiddle" width="56" height="22" _djrealurl="/uploads/3/100001/images/201006/11142314.gif" src="https://img.examcoo.com/paper/100001/201006/11142314.gif"></a> ，则

  A.a>b

  B.a

  C.a=b

  D.a与b的大小关系不能确定

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• 3<a href="https://img.examcoo.com/paper/100001/201006/11142303.gif" rel="lightbox" target="_blank"><img style="BORDER-BOTTOM: 0px; BORDER-LEFT: 0px; BORDER-TOP: 0px; BORDER-RIGHT: 0px" hspace="0" align="absMiddle" width="45" height="41" _djrealurl="/uploads/3/100001/images/201006/11142303.gif" src="https://img.examcoo.com/paper/100001/201006/11142303.gif"></a>等于 

  A.-2ln2

  B.2ln2

  C.-ln2

  D.ln2

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• 4在 <a href="https://img.examcoo.com/paper/100001/201006/11142242.gif" rel="lightbox" target="_blank"><img style="BORDER-BOTTOM: 0px; BORDER-LEFT: 0px; BORDER-TOP: 0px; BORDER-RIGHT: 0px" hspace="0" align="absMiddle" width="61" height="18" _djrealurl="/uploads/3/100001/images/201006/11142242.gif" src="https://img.examcoo.com/paper/100001/201006/11142242.gif"></a> 中， <a href="https://img.examcoo.com/paper/100001/201006/11142248.gif" rel="lightbox" target="_blank"><img style="BORDER-BOTTOM: 0px; BORDER-LEFT: 0px; BORDER-TOP: 0px; BORDER-RIGHT: 0px" hspace="0" align="absMiddle" width="65" height="21" _djrealurl="/uploads/3/100001/images/201006/11142248.gif" src="https://img.examcoo.com/paper/100001/201006/11142248.gif"></a> ， <a href="https://img.examcoo.com/paper/100001/201006/11142252.gif" rel="lightbox" target="_blank"><img style="BORDER-BOTTOM: 0px; BORDER-LEFT: 0px; BORDER-TOP: 0px; BORDER-RIGHT: 0px" hspace="0" align="absMiddle" width="52" height="18" _djrealurl="/uploads/3/100001/images/201006/11142252.gif" src="https://img.examcoo.com/paper/100001/201006/11142252.gif"></a> ，则 <a href="https://img.examcoo.com/paper/100001/201006/11142257.gif" rel="lightbox" target="_blank"><img style="BORDER-BOTTOM: 0px; BORDER-LEFT: 0px; BORDER-TOP: 0px; BORDER-RIGHT: 0px" hspace="0" align="absMiddle" width="57" height="22" _djrealurl="/uploads/3/100001/images/201006/11142257.gif" src="https://img.examcoo.com/paper/100001/201006/11142257.gif"></a> 等于

  A.-16

  B.-8

  C.8

  D.16

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• 5极坐标方程 <a href="https://img.examcoo.com/paper/100001/201006/11142217.gif" rel="lightbox" target="_blank"><img style="BORDER-BOTTOM: 0px; BORDER-LEFT: 0px; BORDER-TOP: 0px; BORDER-RIGHT: 0px" hspace="0" align="absMiddle" width="64" height="21" _djrealurl="/uploads/3/100001/images/201006/11142217.gif" src="https://img.examcoo.com/paper/100001/201006/11142217.gif"></a> 和参数方程 <a href="https://img.examcoo.com/paper/100001/201006/11142222.gif" rel="lightbox" target="_blank"><img hspace="0" align="absMiddle" width="76" height="48" _djrealurl="/uploads/3/100001/images/201006/11142222.gif" src="https://img.examcoo.com/paper/100001/201006/11142222.gif"></a> （t 为参数）所表示的图形分别是

  A.圆，直线

  B.直线，圆

  C.圆，圆

  D.直线，直线

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