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发表于 2008-3-26 10:33:54
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回复:接着分享:全国电气注册专业考试案例真题及解答过程
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt">17题 按机械强度选择截面。</P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt">A <st1:chmetcnv TCSC="0" NumberType="1" Negative="False" HasSpace="True" SourceValue="25" UnitName="mm" w:st="on">25 mm</st1:chmetcnv><SUP>2</SUP> B <st1:chmetcnv TCSC="0" NumberType="1" Negative="False" HasSpace="True" SourceValue="35" UnitName="mm" w:st="on">35 mm</st1:chmetcnv><SUP>2</SUP> </P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt">C <st1:chmetcnv TCSC="0" NumberType="1" Negative="False" HasSpace="True" SourceValue="50" UnitName="mm" w:st="on">50 mm</st1:chmetcnv><SUP>2</SUP> D <st1:chmetcnv TCSC="0" NumberType="1" Negative="False" HasSpace="True" SourceValue="70" UnitName="mm" w:st="on">70 mm</st1:chmetcnv><SUP>2</SUP> </P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><o:p> </o:p></P>
<P style="MARGIN: 0cm 0cm 0pt; mso-pagination: none">《民用建筑电气设计规范(JGJ/T 16-92)》<st1:chsdate w:st="on" IsROCDate="False" IsLunarDate="False" Day="30" Month="12" Year="1899">7.2.2</st1:chsdate>.6 当确定高、低压线路的导线截面时,除根据负荷条件外,尚应与地区配电网的发展规划相结合。当无地区配电网规划时,配电线路的导线截面不宜小于表7.2.2.6所列数值。<o:p></o:p></P>
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<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; mso-layout-grid-align: none">参考答案(D)<B style="mso-bidi-font-weight: normal"><o:p></o:p></B></P> |
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