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醇脱水是合成烯烃的常用方法，实验室合成环己烯的反应和实验装置如下： 可能用到的有关数据如下： 合成反应：在a中加入20g环己醇和2小片碎瓷片，冷却搅动下慢慢加入1mL浓硫酸，b...
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用85%磷酸催化工业环已醇脱水合成环已烯的实验中将磷酸加入环已醇中立即变成红色试分析原因何在如何判断
下列事实不能用勒夏特列原理解释的是
氨水中加酸，NH
的浓度增大
合成氨工业中不断从反应混合物中液化分离出氨气
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醇脱水是合成烯烃的常用方法实验室合成环己烯的反应和实验装置如下 可能用到的有关数据如下
醇脱水是合成烯烃的常用方法实验室合成环己烯的反应和实验装置如下可能用到的有关数据如下合成反应在a中加
质粒载体是在天然质粒的基础上为适应实验室操作而进行构建的构建方法
人工构建
天然合成
化学提取
生物合成
以上都是
某校实验室合成环己烯的反应和实验装置夹持及加热部分已省如下相关数据如下实验步骤1[合成]在a中加入2
在环己烯合成实验中为什么用25ml量筒做接收器
下列事实不能用勒夏特列原理解释的是
氨水中加酸，NH
4
+
的浓度增大
合成氨工业中不断从反应混合物中液化分离出氨气
实验室中常用排饱和食盐水的方法收集Cl
2
合成氨控制在500 ℃左右的温度
醇脱水是合成烯烃的常用方法实验室合成环己烯的反应和实验装置如下 可能用到的有关数据如下
圆底烧瓶
温度计
吸滤器
球形冷凝管
接收器
醇脱水是合成烯烃的常用方法实验室合成环己烯的反应和实验装置如下 可能用到的有关数据如下
化工与材料工程学院专业授予的学位和别的专业不同物理化学材料学学科为重点学科低温共烧材料实验室有机电合
在实验室进行有机合成时放热反应不能在密闭的玻璃容器中进行对反应物进行加热时也不能将玻璃容器密闭
醇脱水是合成烯烃的常用方法实验室合成环己烯的反应和实验装置如下 可能用到的有关数据如下
41%
50%
61%
70%
质粒载体是在天然质粒的基础上为适应实验室操作而进行构建的构建方法为
人工构建
天然合成
化学提取
生物合成
以上都是
醇脱水是合成烯烃的常用方法实验室合成环己烯的反应和实验装置如下 可能用到的有关数据如下
实验室用______追踪RNA的合成
醇脱水是合成烯烃的常用方法实验室合成环己烯的反应和实验装置如下 可能用到的有关数据如下
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Lookit’sBaldy!Aboyshoutedinmydirectionacrosstheplayground.EventhoughIwasusedtoregularinsults侮辱becauseofthe____11____onmyheditwas____12____horribletohear.IsighedasIheadedbacktotheclass. WhenIwasjust20monthsoldIsufferedserious____13____afterabowlfullofhotoilfellonmyhead.Iwas____14____tohospitalandhadtosaythereforweekswhilethedoctors____15____tosavemylife.Holly’svery____16____tobealivetheytoldMumandDad.Butshe’llbe____17____withscarsonherheadandofcourseherhairwon’tgrowthere. AsachildIcaredmuchaboutmyscarssoI____18____woreascarftocoverthemupwhenIlefthome.____19____Ididn’tpeoplewouldcallmehorriblenameslikeBaldy.Althoughmyfriendswerealwayscomfortingmetheynever____20____understoodhowitfelt. ThenthroughthehospitalIwas____21____toachildren’sburnscampwherechildrenlikemecangetanyhelp.ThereI____22____14-year-oldStephaniewhoseburnsarealotmoreseriousthanmine.Butsheisso____23____thatsheneverletsanyoneputherdown.Youshouldn’t____24____whatpeoplesayaboutwhatyoulooklikebecausewe’renotdifferentfromanyoneelseHollyshe____25____me.Andyoudon’tneedtowearascarfbecausey0oulookgreat____26____it!ForthefirsttimeinmylifeIcouldspeaktosomeonewho’dbeenthroughsomething____27____.Soweekslateratmy13thbirthdayparty____28____byherbraveryIgaveupmyscarfandshowedoffmyscars.Itfeltamazingnothavingto____29____awaybehindmyscarf. NowIam____30____ofwhatIlooklikeandmuchhappierbecauseIhaverealizeditisyourpersonality个性thatdecideswhoyoutrulyare.
Lookit’sBaldy!Aboyshoutedinmydirectionacrosstheplayground.EventhoughIwasusedtoregularinsults侮辱becauseofthe____11____onmyheditwas____12____horribletohear.IsighedasIheadedbacktotheclass. WhenIwasjust20monthsoldIsufferedserious____13____afterabowlfullofhotoilfellonmyhead.Iwas____14____tohospitalandhadtosaythereforweekswhilethedoctors____15____tosavemylife.Holly’svery____16____tobealivetheytoldMumandDad.Butshe’llbe____17____withscarsonherheadandofcourseherhairwon’tgrowthere. AsachildIcaredmuchaboutmyscarssoI____18____woreascarftocoverthemupwhenIlefthome.____19____Ididn’tpeoplewouldcallmehorriblenameslikeBaldy.Althoughmyfriendswerealwayscomfortingmetheynever____20____understoodhowitfelt. ThenthroughthehospitalIwas____21____toachildren’sburnscampwherechildrenlikemecangetanyhelp.ThereI____22____14-year-oldStephaniewhoseburnsarealotmoreseriousthanmine.Butsheisso____23____thatsheneverletsanyoneputherdown.Youshouldn’t____24____whatpeoplesayaboutwhatyoulooklikebecausewe’renotdifferentfromanyoneelseHollyshe____25____me.Andyoudon’tneedtowearascarfbecausey0oulookgreat____26____it!ForthefirsttimeinmylifeIcouldspeaktosomeonewho’dbeenthroughsomething____27____.Soweekslateratmy13thbirthdayparty____28____byherbraveryIgaveupmyscarfandshowedoffmyscars.Itfeltamazingnothavingto____29____awaybehindmyscarf. NowIam____30____ofwhatIlooklikeandmuchhappierbecauseIhaverealizeditisyourpersonality个性thatdecideswhoyoutrulyare.
回答下列果蝇眼色的遗传问题
Lookit’sBaldy!Aboyshoutedinmydirectionacrosstheplayground.EventhoughIwasusedtoregularinsults侮辱becauseofthe____11____onmyheditwas____12____horribletohear.IsighedasIheadedbacktotheclass. WhenIwasjust20monthsoldIsufferedserious____13____afterabowlfullofhotoilfellonmyhead.Iwas____14____tohospitalandhadtosaythereforweekswhilethedoctors____15____tosavemylife.Holly’svery____16____tobealivetheytoldMumandDad.Butshe’llbe____17____withscarsonherheadandofcourseherhairwon’tgrowthere. AsachildIcaredmuchaboutmyscarssoI____18____woreascarftocoverthemupwhenIlefthome.____19____Ididn’tpeoplewouldcallmehorriblenameslikeBaldy.Althoughmyfriendswerealwayscomfortingmetheynever____20____understoodhowitfelt. ThenthroughthehospitalIwas____21____toachildren’sburnscampwherechildrenlikemecangetanyhelp.ThereI____22____14-year-oldStephaniewhoseburnsarealotmoreseriousthanmine.Butsheisso____23____thatsheneverletsanyoneputherdown.Youshouldn’t____24____whatpeoplesayaboutwhatyoulooklikebecausewe’renotdifferentfromanyoneelseHollyshe____25____me.Andyoudon’tneedtowearascarfbecausey0oulookgreat____26____it!ForthefirsttimeinmylifeIcouldspeaktosomeonewho’dbeenthroughsomething____27____.Soweekslateratmy13thbirthdayparty____28____byherbraveryIgaveupmyscarfandshowedoffmyscars.Itfeltamazingnothavingto____29____awaybehindmyscarf. NowIam____30____ofwhatIlooklikeandmuchhappierbecauseIhaverealizeditisyourpersonality个性thatdecideswhoyoutrulyare.
Nowadayspeoplearemoreconcernedabouttheenvironment______theylive.
在焙烧明矾的反应中还原剂是__________
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若H7N9禽流感病毒侵入人体机体在免疫应答中不会发生的是
Lookit’sBaldy!Aboyshoutedinmydirectionacrosstheplayground.EventhoughIwasusedtoregularinsults侮辱becauseofthe____11____onmyheditwas____12____horribletohear.IsighedasIheadedbacktotheclass. WhenIwasjust20monthsoldIsufferedserious____13____afterabowlfullofhotoilfellonmyhead.Iwas____14____tohospitalandhadtosaythereforweekswhilethedoctors____15____tosavemylife.Holly’svery____16____tobealivetheytoldMumandDad.Butshe’llbe____17____withscarsonherheadandofcourseherhairwon’tgrowthere. AsachildIcaredmuchaboutmyscarssoI____18____woreascarftocoverthemupwhenIlefthome.____19____Ididn’tpeoplewouldcallmehorriblenameslikeBaldy.Althoughmyfriendswerealwayscomfortingmetheynever____20____understoodhowitfelt. ThenthroughthehospitalIwas____21____toachildren’sburnscampwherechildrenlikemecangetanyhelp.ThereI____22____14-year-oldStephaniewhoseburnsarealotmoreseriousthanmine.Butsheisso____23____thatsheneverletsanyoneputherdown.Youshouldn’t____24____whatpeoplesayaboutwhatyoulooklikebecausewe’renotdifferentfromanyoneelseHollyshe____25____me.Andyoudon’tneedtowearascarfbecausey0oulookgreat____26____it!ForthefirsttimeinmylifeIcouldspeaktosomeonewho’dbeenthroughsomething____27____.Soweekslateratmy13thbirthdayparty____28____byherbraveryIgaveupmyscarfandshowedoffmyscars.Itfeltamazingnothavingto____29____awaybehindmyscarf. NowIam____30____ofwhatIlooklikeandmuchhappierbecauseIhaverealizeditisyourpersonality个性thatdecideswhoyoutrulyare.
Lookit’sBaldy!Aboyshoutedinmydirectionacrosstheplayground.EventhoughIwasusedtoregularinsults侮辱becauseofthe____11____onmyheditwas____12____horribletohear.IsighedasIheadedbacktotheclass. WhenIwasjust20monthsoldIsufferedserious____13____afterabowlfullofhotoilfellonmyhead.Iwas____14____tohospitalandhadtosaythereforweekswhilethedoctors____15____tosavemylife.Holly’svery____16____tobealivetheytoldMumandDad.Butshe’llbe____17____withscarsonherheadandofcourseherhairwon’tgrowthere. AsachildIcaredmuchaboutmyscarssoI____18____woreascarftocoverthemupwhenIlefthome.____19____Ididn’tpeoplewouldcallmehorriblenameslikeBaldy.Althoughmyfriendswerealwayscomfortingmetheynever____20____understoodhowitfelt. ThenthroughthehospitalIwas____21____toachildren’sburnscampwherechildrenlikemecangetanyhelp.ThereI____22____14-year-oldStephaniewhoseburnsarealotmoreseriousthanmine.Butsheisso____23____thatsheneverletsanyoneputherdown.Youshouldn’t____24____whatpeoplesayaboutwhatyoulooklikebecausewe’renotdifferentfromanyoneelseHollyshe____25____me.Andyoudon’tneedtowearascarfbecausey0oulookgreat____26____it!ForthefirsttimeinmylifeIcouldspeaktosomeonewho’dbeenthroughsomething____27____.Soweekslateratmy13thbirthdayparty____28____byherbraveryIgaveupmyscarfandshowedoffmyscars.Itfeltamazingnothavingto____29____awaybehindmyscarf. NowIam____30____ofwhatIlooklikeandmuchhappierbecauseIhaverealizeditisyourpersonality个性thatdecideswhoyoutrulyare.
Howmuchdoyouhavetopayintotaliffourofyougotogether
Lookit’sBaldy!Aboyshoutedinmydirectionacrosstheplayground.EventhoughIwasusedtoregularinsults侮辱becauseofthe____11____onmyheditwas____12____horribletohear.IsighedasIheadedbacktotheclass. WhenIwasjust20monthsoldIsufferedserious____13____afterabowlfullofhotoilfellonmyhead.Iwas____14____tohospitalandhadtosaythereforweekswhilethedoctors____15____tosavemylife.Holly’svery____16____tobealivetheytoldMumandDad.Butshe’llbe____17____withscarsonherheadandofcourseherhairwon’tgrowthere. AsachildIcaredmuchaboutmyscarssoI____18____woreascarftocoverthemupwhenIlefthome.____19____Ididn’tpeoplewouldcallmehorriblenameslikeBaldy.Althoughmyfriendswerealwayscomfortingmetheynever____20____understoodhowitfelt. ThenthroughthehospitalIwas____21____toachildren’sburnscampwherechildrenlikemecangetanyhelp.ThereI____22____14-year-oldStephaniewhoseburnsarealotmoreseriousthanmine.Butsheisso____23____thatsheneverletsanyoneputherdown.Youshouldn’t____24____whatpeoplesayaboutwhatyoulooklikebecausewe’renotdifferentfromanyoneelseHollyshe____25____me.Andyoudon’tneedtowearascarfbecausey0oulookgreat____26____it!ForthefirsttimeinmylifeIcouldspeaktosomeonewho’dbeenthroughsomething____27____.Soweekslateratmy13thbirthdayparty____28____byherbraveryIgaveupmyscarfandshowedoffmyscars.Itfeltamazingnothavingto____29____awaybehindmyscarf. NowIam____30____ofwhatIlooklikeandmuchhappierbecauseIhaverealizeditisyourpersonality个性thatdecideswhoyoutrulyare.
—WhyareyoureyessoredYou_______havesleptwelllastnight. —YeahIstayeduplatewritingareport.
瘦素是动物脂肪细胞分泌的一种蛋白质激素机体脂肪储存量越大瘦素分泌越多下丘脑的某些细胞接受到瘦素信号后机体能通过复杂的神经内分泌网络调节摄食行为脂肪是细胞内良好的__________物质与糖类相比脂肪分子中氧含量__________
瘦素是动物脂肪细胞分泌的一种蛋白质激素机体脂肪储存量越大瘦素分泌越多下丘脑的某些细胞接受到瘦素信号后机体能通过复杂的神经内分泌网络调节摄食行为现有两类患肥胖症的小鼠A类小鼠肥胖是瘦素受体基因缺陷所致B类小鼠肥胖原因未知分析以下实验 ①根据实验结果推测连体前A小鼠体内瘦素的含量比正常小鼠__________B小鼠肥胖的原因最可能是__________ ②为排除手术实验结果的干扰可增设一组处理措施为__________的对照实脸
Hurryupkids!Theschoolbus_____forus!
Lookit’sBaldy!Aboyshoutedinmydirectionacrosstheplayground.EventhoughIwasusedtoregularinsults侮辱becauseofthe____11____onmyheditwas____12____horribletohear.IsighedasIheadedbacktotheclass. WhenIwasjust20monthsoldIsufferedserious____13____afterabowlfullofhotoilfellonmyhead.Iwas____14____tohospitalandhadtosaythereforweekswhilethedoctors____15____tosavemylife.Holly’svery____16____tobealivetheytoldMumandDad.Butshe’llbe____17____withscarsonherheadandofcourseherhairwon’tgrowthere. AsachildIcaredmuchaboutmyscarssoI____18____woreascarftocoverthemupwhenIlefthome.____19____Ididn’tpeoplewouldcallmehorriblenameslikeBaldy.Althoughmyfriendswerealwayscomfortingmetheynever____20____understoodhowitfelt. ThenthroughthehospitalIwas____21____toachildren’sburnscampwherechildrenlikemecangetanyhelp.ThereI____22____14-year-oldStephaniewhoseburnsarealotmoreseriousthanmine.Butsheisso____23____thatsheneverletsanyoneputherdown.Youshouldn’t____24____whatpeoplesayaboutwhatyoulooklikebecausewe’renotdifferentfromanyoneelseHollyshe____25____me.Andyoudon’tneedtowearascarfbecausey0oulookgreat____26____it!ForthefirsttimeinmylifeIcouldspeaktosomeonewho’dbeenthroughsomething____27____.Soweekslateratmy13thbirthdayparty____28____byherbraveryIgaveupmyscarfandshowedoffmyscars.Itfeltamazingnothavingto____29____awaybehindmyscarf. NowIam____30____ofwhatIlooklikeandmuchhappierbecauseIhaverealizeditisyourpersonality个性thatdecideswhoyoutrulyare.
将玉米的PEPC酶基因导入水稻后测得光照强度对转基因水稻和原种水稻的气孔导度及光合速率的影响结果如下图所示注气孔导度越大气孔开放程度越高
将玉米的PEPC酶基因导入水稻后测得光照强度对转基因水稻和原种水稻的气孔导度及光合速率的影响结果如下图所示注气孔导度越大气孔开放程度越高 水稻叶肉细胞进行光合作用的场所是__________捕获光能的色素中含量最多的是__________
Lookit’sBaldy!Aboyshoutedinmydirectionacrosstheplayground.EventhoughIwasusedtoregularinsults侮辱becauseofthe____11____onmyheditwas____12____horribletohear.IsighedasIheadedbacktotheclass. WhenIwasjust20monthsoldIsufferedserious____13____afterabowlfullofhotoilfellonmyhead.Iwas____14____tohospitalandhadtosaythereforweekswhilethedoctors____15____tosavemylife.Holly’svery____16____tobealivetheytoldMumandDad.Butshe’llbe____17____withscarsonherheadandofcourseherhairwon’tgrowthere. AsachildIcaredmuchaboutmyscarssoI____18____woreascarftocoverthemupwhenIlefthome.____19____Ididn’tpeoplewouldcallmehorriblenameslikeBaldy.Althoughmyfriendswerealwayscomfortingmetheynever____20____understoodhowitfelt. ThenthroughthehospitalIwas____21____toachildren’sburnscampwherechildrenlikemecangetanyhelp.ThereI____22____14-year-oldStephaniewhoseburnsarealotmoreseriousthanmine.Butsheisso____23____thatsheneverletsanyoneputherdown.Youshouldn’t____24____whatpeoplesayaboutwhatyoulooklikebecausewe’renotdifferentfromanyoneelseHollyshe____25____me.Andyoudon’tneedtowearascarfbecausey0oulookgreat____26____it!ForthefirsttimeinmylifeIcouldspeaktosomeonewho’dbeenthroughsomething____27____.Soweekslateratmy13thbirthdayparty____28____byherbraveryIgaveupmyscarfandshowedoffmyscars.Itfeltamazingnothavingto____29____awaybehindmyscarf. NowIam____30____ofwhatIlooklikeandmuchhappierbecauseIhaverealizeditisyourpersonality个性thatdecideswhoyoutrulyare.
下列所采取的措施中不涉及降低化学反应活化能原理的是
Whatyouhavejustreadisa
稻田生态系统是四川盆地重要的农田生态系统卷叶螟和褐飞虱是稻田中两种主要害虫拟水狼蛛是这两种害虫的天敌下列叙述错误的是
Lookit’sBaldy!Aboyshoutedinmydirectionacrosstheplayground.EventhoughIwasusedtoregularinsults侮辱becauseofthe____11____onmyheditwas____12____horribletohear.IsighedasIheadedbacktotheclass. WhenIwasjust20monthsoldIsufferedserious____13____afterabowlfullofhotoilfellonmyhead.Iwas____14____tohospitalandhadtosaythereforweekswhilethedoctors____15____tosavemylife.Holly’svery____16____tobealivetheytoldMumandDad.Butshe’llbe____17____withscarsonherheadandofcourseherhairwon’tgrowthere. AsachildIcaredmuchaboutmyscarssoI____18____woreascarftocoverthemupwhenIlefthome.____19____Ididn’tpeoplewouldcallmehorriblenameslikeBaldy.Althoughmyfriendswerealwayscomfortingmetheynever____20____understoodhowitfelt. ThenthroughthehospitalIwas____21____toachildren’sburnscampwherechildrenlikemecangetanyhelp.ThereI____22____14-year-oldStephaniewhoseburnsarealotmoreseriousthanmine.Butsheisso____23____thatsheneverletsanyoneputherdown.Youshouldn’t____24____whatpeoplesayaboutwhatyoulooklikebecausewe’renotdifferentfromanyoneelseHollyshe____25____me.Andyoudon’tneedtowearascarfbecausey0oulookgreat____26____it!ForthefirsttimeinmylifeIcouldspeaktosomeonewho’dbeenthroughsomething____27____.Soweekslateratmy13thbirthdayparty____28____byherbraveryIgaveupmyscarfandshowedoffmyscars.Itfeltamazingnothavingto____29____awaybehindmyscarf. NowIam____30____ofwhatIlooklikeandmuchhappierbecauseIhaverealizeditisyourpersonality个性thatdecideswhoyoutrulyare.
A12O3在一定条件下可制得AIN其晶体结构如右图所示该晶体中Al的配位数是__________
由于酵母菌利用淀粉的能力很弱有人将地衣芽孢杆菌的α-淀粉酶基因转入酵母菌中经筛选得到了可高效利用淀粉的工程菌菌种过程如图甲所示 某间学尝试过程③的操作其中一个平板经培养后的菌落分布如图乙所示该同学的接种方法是__________推测该同学接种时可能的操作失误是__________
由于酵母菌利用淀粉的能力很弱有人将地衣芽孢杆菌的α-淀粉酶基因转入酵母菌中经筛选得到了可高效利用淀粉的工程菌菌种过程如图甲所示 用凝胶色谱法分离α-淀粉酶时在色谱柱中移动速度较慢的蛋白质相对分子质量较__________
Lookit’sBaldy!Aboyshoutedinmydirectionacrosstheplayground.EventhoughIwasusedtoregularinsults侮辱becauseofthe____11____onmyheditwas____12____horribletohear.IsighedasIheadedbacktotheclass. WhenIwasjust20monthsoldIsufferedserious____13____afterabowlfullofhotoilfellonmyhead.Iwas____14____tohospitalandhadtosaythereforweekswhilethedoctors____15____tosavemylife.Holly’svery____16____tobealivetheytoldMumandDad.Butshe’llbe____17____withscarsonherheadandofcourseherhairwon’tgrowthere. AsachildIcaredmuchaboutmyscarssoI____18____woreascarftocoverthemupwhenIlefthome.____19____Ididn’tpeoplewouldcallmehorriblenameslikeBaldy.Althoughmyfriendswerealwayscomfortingmetheynever____20____understoodhowitfelt. ThenthroughthehospitalIwas____21____toachildren’sburnscampwherechildrenlikemecangetanyhelp.ThereI____22____14-year-oldStephaniewhoseburnsarealotmoreseriousthanmine.Butsheisso____23____thatsheneverletsanyoneputherdown.Youshouldn’t____24____whatpeoplesayaboutwhatyoulooklikebecausewe’renotdifferentfromanyoneelseHollyshe____25____me.Andyoudon’tneedtowearascarfbecausey0oulookgreat____26____it!ForthefirsttimeinmylifeIcouldspeaktosomeonewho’dbeenthroughsomething____27____.Soweekslateratmy13thbirthdayparty____28____byherbraveryIgaveupmyscarfandshowedoffmyscars.Itfeltamazingnothavingto____29____awaybehindmyscarf. NowIam____30____ofwhatIlooklikeandmuchhappierbecauseIhaverealizeditisyourpersonality个性thatdecideswhoyoutrulyare.
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的浓度增大 合成氨工业中不断从反应混合物中液化分离出氨气 实验室中常用排饱和食盐水的方法收集Cl2 合成氨控制在500 ℃左右的温度
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