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在控制温度和大气成分的温室中，可以用人工配制的营养液进行蔬菜的无土栽培。下表为营养液成分表，右下图为无土栽培番茄体内的代谢示意图。请回答下列问题： 在②过程中，能量变化的特点是什么...
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无土栽培是利用营养液栽培作物的一种方法无土栽培的作物可从营养液中吸取养料和水分某研究小组根据作物的生
在控制温度和大气成分的温室中可以用人工配制的营养液进行蔬菜的无土栽培下表为营养液成分表右下图为
在可控制温度和大气成分的温室中以人工配制的营养液无土栽培蔬菜请回答下列问题1春季天气晴朗光照充足时为
用人工配制的植物培养液培植黄瓜若过一段时间营养液中缺少镁颜色首先由绿变黄的是
茎尖
新生叶
植株中部叶片
植株下部叶片
在控制温度和大气成分的温室中可以用人工配制的营养液进行蔬菜的无土栽培下表为营养液成分表右下图为
在可控制温度和大气成分的温室中以人工配制的营养液无土栽培蔬菜请回答下列问题1春季天气晴朗光照充足时为
用人工配制的营养液培养黄瓜过一段时间后营养液中缺少镁则黄瓜幼苗颜色首先由绿转黄的是
茎尖
新生叶
植株中部叶片
植株下部叶片
在控制温度和大气成分的温室中可以用人工配制的营养液进行蔬菜的无土栽培下表为营养液成分表右下图为
用人工综合营养液配制细胞生长液时为防止细菌污染可加入
抗生素
谷氨酰胺
血清.
碳酸氢钠
HEPES
某中学研究性课题活动小组的同学利用一个可控制温度和大气成分的温室用人工配制的营养液配方见下表培育番茄
在控制温度和大气成分的温室中可以用人工配制的营养液进行蔬菜的无土栽培下表为营养液成分表右下图为
提高农业生产力是实现农村小康社会的重要途径之一近年来我国在栽培农业方面出现了无土栽培和大棚种植反季节
在大气成分中能产生温室效应的大气成分是
氧气
水汽
臭氧
二氧化碳
干球温度表可以用来测定
空气温度
大气蒸发
C空气成分
大气风速
无土栽培就是用人工配制的营养液培育植物的方法配制植物营养液是根据
光合作用需要水的道理
植物生长发育过程需要无机盐的道理
植物根系呼吸需要水中溶解氧的道理
植物蒸腾作用需要的道理
56.用人工配制的植物培养液培植黄瓜若过一段时间营养液中缺少镁颜色首先由绿变黄的是
茎尖
新生叶
植株中部叶片
植株下部叶片
用人工综合营养液配制细胞生长液时为修正pH可加入
抗生素
谷氨酰胺
血清.
碳酸氢钠
HEPES
患者男71岁因喉癌收入院在全麻下行气管切开全喉切除术该患者给予营养的措施正确的是
营养液的温度控制在39℃～42℃
首先给予25%浓度的营养液
采取平卧位
输注管道定时更换
配制好的营养液务必在12h内用完
9分在可控制温度和大气成分的温室中以人工配制的营养液无土栽培蔬菜请回答下列问题1春季天气晴朗光照充足
在下列大气成分中能产生温室效应的大气成分是
氧气
水汽
臭氧
二氧化碳
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Itwasalmost9:00p.m.whenMaryleftherofficetogohomeitwas16.Shestartedhercaranddrovebacktoherhomeinthecountry.Thesnowwasheavy.ThenMarycrossedasmall17.Suddenlythecarrushedoutofthebridgewhichwascoveredwithice.Maryhitherheadonthesteeringwheel方向盘andlostconsciousness知觉.Whenshewokeupherheadwasbleeding流血andshewasshakingfromthe18.Shedidn’tknow19shewas.Maryopenedhercardoorandlookedaround.Shewas20thebridgeandhercarwassittingonthefrozenriver!Shefeltverysad.Sheknewtheicewouldn’tholdhercarforvery21.Shetriedtoclimbuptothebridgeseveraltimesbutshekept22inthesnow.Marytriedagainandagainbutstillshecouldn’tgetup.Sherealizedthat23couldseehercarunderthebridge.Shewaslyinginthesnowandshecouldn’tmove.Maryclosedhereyesandwaitedto24.Thenshehearda25.Maryopenedhereyes.Therewasanoldmanstandingoverher.Withthehelpoftheoldmanshestoodupandwalkedup.Ⅱ．完形填空/Cloze
Itwasalmost9:00p.m.whenMaryleftherofficetogohomeitwas16.Shestartedhercaranddrovebacktoherhomeinthecountry.Thesnowwasheavy.ThenMarycrossedasmall17.Suddenlythecarrushedoutofthebridgewhichwascoveredwithice.Maryhitherheadonthesteeringwheel方向盘andlostconsciousness知觉.Whenshewokeupherheadwasbleeding流血andshewasshakingfromthe18.Shedidn’tknow19shewas.Maryopenedhercardoorandlookedaround.Shewas20thebridgeandhercarwassittingonthefrozenriver!Shefeltverysad.Sheknewtheicewouldn’tholdhercarforvery21.Shetriedtoclimbuptothebridgeseveraltimesbutshekept22inthesnow.Marytriedagainandagainbutstillshecouldn’tgetup.Sherealizedthat23couldseehercarunderthebridge.Shewaslyinginthesnowandshecouldn’tmove.Maryclosedhereyesandwaitedto24.Thenshehearda25.Maryopenedhereyes.Therewasanoldmanstandingoverher.Withthehelpoftheoldmanshestoodupandwalkedup.Ⅱ．完形填空/Cloze
AAlittleboyinvitedhismothertoattend出席hiselementaryschool’sfirstteacher-parentmeeting.Tothelittleboy’sdismayhismothersaidshewouldgo.Thiswouldbethefirsttimethathisclassmatesandteachersmethismotherandhewasembarrassed尴尬的byherappearance.Therewasasevere严重的scar伤疤thatcoverednearlythewholerightsideofherface.Theboyneverwantedtotalkaboutwhyorhowshegotthescar.Atthemeetingthepeoplewereimpressed留下深刻的印象bythekindnessofhismotherwiththescarbutthelittleboywasstillembarrassedandhidhimselffromeveryone.Howeverhecouldhearclearlytheconversationbetweenhismotherandtheteacher.Howdidyougetthescaronyourfacetheteacherasked.ThemotherrepliedWhenmysonwasababyhewasinaroomthatcaughtonfire.EveryonewastooafraidtogoinbecausethefirewasoutofcontrolbutIwentin.AsIwasrunningtowardshisbedIsawaburningwoodfallingdownandIplacedmyselfoverhimtryingtoprotecthim.Iwasknockedtobeunconscious无知觉的butluckilyafiremancameinandsavedbothofus.Shetouchedtheburnedsideofherface.ThisscarwillbeforeverbutuntiltodayIhaveneverregretteddoingwhatIdid.Whenthelittleboyheardthishecouldn’thelprunningtowardshismotherwithtearsinhiseyes.Hehuggedherandfelthismotherwasgreaterthananyone.Heheldherhandtightlyfortherestoftheday.Theboy’smotherwasactually事实上_______
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EBEIJING—NOCarDaywasfirststartedby34citiesinFranceonSeptember221998.Itwasstartedtoprotecttheenvironment.Bynowmorethan1000citiesaroundtheworldhavehadaNoCarDay.ThefirstNoCarDayinChinawasinChengduin2001.OthercitiesincludingTaipeiShanghaiandWuhanalsosupport支持theday.InBeijingmoreandmorepeoplearejoiningintheactivity.Itasksdriverstoleavetheircarsathomeforonedayeachmonthandwalkorrideabiketowork.ItalsocallsonBeijingersnottousecarsonJune5WordEnvironmentDay.Theslogan口号forthedayisIfwedriveforonelessdaywecanhaveonemoreniceday.Sofarmorethan200000drivershaveshowntheirsupport.Wecan’tcontroltheweatherbutwecanchoosenottodrivesaidWuZonghuaacarclubchairman.Beijingistryingtohave238blueskydaysthisyear.InthefirstquarterofthisyearBeijingonlyhad52blueskydays.Thiswas11dayslessthanthenumberforthesameperiodlastyear.Muchofthedust灰尘comesfromthedesert沙漠.Butcarscausemostoftheairpollution污染.WemustdomoreforNoCarDay.TheactivityofNoCarDayencouragesBeijingdrivers______
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