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id="J_question_detail" > <li> <div id="mrdc71d" class="question-block"> <div id="orjjqgu" class="q-mc"> <h1 class="q-tit"> 1. <a href="/paper/view-5149324.shtml" class="ques-origin a-pointer" target="_blank"> (2023九上·新沂期末) </a> 閱讀短文，回答文后問(wèn)題：<p align="left">燃?xì)鉄崴?/p><p align="left">燃?xì)鉄崴魇且环N使用方便快捷，不受天氣影響的家用熱水設(shè)備，如圖為燃?xì)鉄崴鞯慕Y(jié)構(gòu)和工作原理示意圖。熱水器工作時(shí)，用電子點(diǎn)火器點(diǎn)火，燃?xì)庠谌紵鲀?nèi)燃燒，產(chǎn)生的1700℃的高溫?zé)煔?。同時(shí)風(fēng)機(jī)轉(zhuǎn)動(dòng)，使高溫?zé)煔馍仙竭_(dá)熱交換器，熱交換器是回環(huán)形的金屬管，冷水從A處流入管內(nèi)，被管外的高溫燃?xì)饧訜幔兂蔁崴畯臑锽處源源不斷流出，溫度降低后的煙氣從排煙管排出。下表是一臺(tái)燃?xì)鉄崴鞯募夹g(shù)參數(shù)，其中“熱水產(chǎn)出率”的含義是每分鐘使水溫升高25℃時(shí)的出水體積；“額定耗氣量”的含義是熱水器正常工作1小時(shí)消耗的燃?xì)怏w積。</p><table border="1" width="215"> <tbody><tr> <td width="102"> <p align="left">適用燃?xì)?/p> </td> <td width="113"> <p align="left">天然氣</p> </td> </tr> <tr> <td width="102"> <p align="left">熱值</p> </td> <td width="113"> <p align="left"><img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmrow%3E%3Cmn%3E3%3C%2Fmn%3E%3Cmo%3E%C3%97%3C%2Fmo%3E%3Cmsup%3E%3Cmrow%3E%3Cmn%3E10%3C%2Fmn%3E%3C%2Fmrow%3E%3Cmn%3E7%3C%2Fmn%3E%3C%2Fmsup%3E%3Cmtext%3EJ%3C%2Fmtext%3E%3Cmo%3E%2F%3C%2Fmo%3E%3Cmsup%3E%3Cmtext%3Em%3C%2Fmtext%3E%3Cmn%3E3%3C%2Fmn%3E%3C%2Fmsup%3E%3C%2Fmrow%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;"></p> </td> </tr> <tr> <td width="102"> <p align="left">額定耗氣量</p> </td> <td width="113"> <p align="left"><img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmrow%3E%3Cmn%3E3.6%3C%2Fmn%3E%3Cmsup%3E%3Cmtext%3Em%3C%2Fmtext%3E%3Cmtext%3E3%3C%2Fmtext%3E%3C%2Fmsup%3E%3Cmo%3E%2F%3C%2Fmo%3E%3Cmi+mathvariant%3D%22normal%22%3Eh%3C%2Fmi%3E%3C%2Fmrow%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;"></p> </td> </tr> <tr> <td width="102"> <p align="left">熱水產(chǎn)出率</p> </td> <td width="113"> <p align="left">12L/min</p> </td> </tr> </tbody></table> <p align="left"><img width="215" height="239" src="http://tikupic.21cnjy.com/2023/03/08/32/d2/32d22b37be802ecc4a06dcb752696e5c_263x292.png" style="max-width:100%;"></p> </h1> <ol class="q-bd-list"> <li> <div id="xzsco8g" class="question-block"> <div id="lre21pn" class="q-mc"> <div id="6egmkus" class="q-tit"> （1）燃?xì)馊紵鸦瘜W(xué)能轉(zhuǎn)化為煙氣的 <span id="i2evrkn" class="filling" ></span>能； </div> </div> </div> <li> <li> <div id="dwhhvms" class="question-block"> <div id="zlnajbs" class="q-mc"> <div id="inayi3c" class="q-tit"> （2）在熱交換器中冷水變熱，使其內(nèi)能改變的方式稱(chēng)為 <span id="bulijz5" class="filling" ></span>； </div> </div> </div> <li> <li> <div id="z5neogu" class="question-block"> <div id="nzciwfd" class="q-mc"> <div id="eqaruc3" class="q-tit"> （3）根據(jù)表格中數(shù)據(jù)，該燃?xì)鉄崴鞴ぷ鲿r(shí)，如果使水溫升高25℃，則每分鐘產(chǎn)生的熱水吸收的熱量為 <span id="b5uv8v7" class="filling" ></span>J；[<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmrow%3E%3Cmsub%3E%3Cmi%3Ec%3C%2Fmi%3E%3Cmi%3E%E6%B0%B4%3C%2Fmi%3E%3C%2Fmsub%3E%3Cmo%3E%3D%3C%2Fmo%3E%3Cmn%3E4.2%3C%2Fmn%3E%3Cmo%3E%C3%97%3C%2Fmo%3E%3Cmsup%3E%3Cmrow%3E%3Cmn%3E10%3C%2Fmn%3E%3C%2Fmrow%3E%3Cmn%3E3%3C%2Fmn%3E%3C%2Fmsup%3E%3Cmtext%3EJ%3C%2Fmtext%3E%3Cmo%3E%2F%3C%2Fmo%3E%3Cmo+stretchy%3D%22false%22%3E%28%3C%2Fmo%3E%3Cmi%3Ek%3C%2Fmi%3E%3Cmi%3Eg%3C%2Fmi%3E%3Cmo%3E%E2%8B%85%3C%2Fmo%3E%3Cmo%3E%E2%84%83%3C%2Fmo%3E%3Cmo+stretchy%3D%22false%22%3E%29%3C%2Fmo%3E%3C%2Fmrow%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;">] </div> </div> </div> <li> <li> <div id="zmo8mpw" class="question-block"> <div id="8zdipfl" class="q-mc"> <div id="ilflth2" class="q-tit"> （4）天然氣完全燃燒放出熱量，沒(méi)有完全被水吸收，熱水吸收的熱量和天然氣完全燃燒放出的熱量的比值稱(chēng)為效率，則該燃?xì)鉄崴鞯男蕿?span id="3tr3duz" class="filling" ></span>。 </div> </div> </div> <li> </ol> </div> </div> </li> </ul> <div 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