【判断题】【消耗次数：1】
不同浓度的高锰酸钾溶液，它们的最大吸收波长也不同。
①
正确
②
错误
参考答案：
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相关题目
【单选题】
有A、B两份不同浓度的有色物质溶液，A溶液用1.00cm 吸收池，B溶液用2.00cm 吸收池，在同一波长下测得的吸光度的值相等，则它们的浓度关系为
①
A是B的1/2
②
A等于B
③
B是A的4倍
④
B是A的1/2
随机题目
【简答题】
简述幼儿记忆发展的特点
【单选题】
学前儿童养成良好的用眼习惯，以下说法正确的是（ ）
①
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②
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③
Normal 0 7.8 磅 0 2 false false false EN-US ZH-CN X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:普通表格; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.5pt; mso-bidi-font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:宋体; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-font-kerning:1.0pt;} Normal 0 7.8 磅 0 2 false false false EN-US ZH-CN X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:普通表格; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.5pt; mso-bidi-font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:宋体; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-font-kerning:1.0pt;}只要保持正确的看书姿势，长时间的阅读并不会导致儿童眼睛疲劳
④
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【填空题】
最重要并常用的形态指标是（ ）和（ ）。<img class="questionIndex" data-index="1" src="/common/images/question_button/BlankSpace1.gif"/><img class="questionIndex" data-index="2" src="/common/images/question_button/BlankSpace2.gif"/>
【填空题】
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【填空题】
（ ）规律：先学会抬头、转头,然后能翻身、学会坐、站立，最后才会走、跑、跳等复杂动作。<img class="questionIndex" data-index="1" src="/common/images/question_button/BlankSpace1.gif"/>
【填空题】
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【填空题】
大脑皮质活动的（ ）原则是指人们学习和和工作的效率与有关的大脑皮质是否处于优势兴奋状态有关。<img class="questionIndex" data-index="1" src="/common/images/question_button/BlankSpace1.gif"/>
【填空题】
幼年时期，甲状腺素分泌不足，将患（ ）。<img class="questionIndex" data-index="1" src="/common/images/question_button/BlankSpace1.gif"/>
【填空题】
在幼年时期，若生长素分泌不足，将患（ ），若分泌过多则患（ ）。<img class="questionIndex" data-index="1" src="/common/images/question_button/BlankSpace1.gif"/><img class="questionIndex" data-index="2" src="/common/images/question_button/BlankSpace2.gif"/>
【填空题】
幼儿尿道短，粘膜薄嫩，弹性纤维发育差，易受损伤，易引起（ ）。<img class="questionIndex" data-index="1" src="/common/images/question_button/BlankSpace1.gif"/>