简述效力待定合同的概念和种类。

<p class="MsoNormal" style="text-indent:24.0pt;mso-char-indent-count:2.0; tab-stops:45.0pt;background:white;mso-shading:white;mso-pattern:solid white"><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:宋体">答：效力待定合同是指已成立的合同因欠缺一定的生效要件，其生效与否尚未确定，须经过补正方可生效，在一定期限内不予补正则为无效的合同。（<span lang="EN-US">4</span>分）<span lang="EN-US"><o:p></o:p></span></span></p> <p class="MsoNormal" style="text-indent:24.0pt;mso-char-indent-count:2.0; tab-stops:45.0pt;background:white;mso-shading:white;mso-pattern:solid white"><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:宋体">种类：<span lang="EN-US"><o:p></o:p></span></span></p> <p class="MsoNormal" style="text-indent:12.0pt;mso-char-indent-count:1.0; tab-stops:45.0pt;background:white;mso-shading:white;mso-pattern:solid white"><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:宋体">（<span lang="EN-US">1</span>）限制民事行为能力人依法不能独立订立的合同。（<span lang="EN-US">2</span>分）<span lang="EN-US"><o:p></o:p></span></span></p> <p class="MsoNormal" style="text-indent:12.0pt;mso-char-indent-count:1.0; tab-stops:45.0pt;background:white;mso-shading:white;mso-pattern:solid white"><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:宋体">（<span lang="EN-US">2</span>）无权代理人以被代理人的名义订立的合同。（<span lang="EN-US">2</span>分）<span lang="EN-US"><o:p></o:p></span></span></p> <p class="MsoNormal" align="left" style="text-indent: 12pt;"><span style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;font-family:宋体">（<span lang="EN-US">3</span>）无处分权的人处分他人财产的合同 。（<span lang="EN-US">2</span>分）</span><span lang="EN-US" style="font-size:12.0pt; mso-bidi-font-size:11.0pt;font-family:宋体;mso-bidi-font-family:Arial;mso-font-kerning: 0pt"><o:p></o:p></span></p>