北京市朝阳区九年级综合练习(二)物理试卷答案试卷答案,炎德英才答案网站目前收集并整理关于北京市朝阳区九年级综合练习(二)物理试卷答案试卷答案得系列试题及其答案，更多试题答案请关注我们

北京市朝阳区九年级综合练习(二)物理试卷答案试卷答案

以下是该试卷的部分内容或者是答案亦或者啥也没有，更多试题答案请关注微信公众号：趣找答案/直接访问www.qzda.com(趣找答案)

是金国侧所名枚高考极数金典卷dividu-ntheyectssuchasflie茶，张h个t别高过2间@OWhileof

Ct食肉s的>plntrowhepantkingdm,thsisthefirstwiltobcpatdiinNmedNcobeaucoveredbyaprojectlookingfortobaccopantAustraliatheyTheteam,whichincludedMarkChasofLodon'RoyalBotanicGardensKew.colththeedscedsfromtheinsecticidal(plantattruckstontheNorthwestCoastalHighents.way,andthencultivatedthemKew.wheretheplantswentontodevelopthemeikytogetglandularhairsandtokillinsectsinsidethegreenhouses.Theinsect-killinghairsresemblethoseoncaivoroussundewplants,"butwehavetheyidencethatthereisanynutritionalbenefittotheplant,sayChase,whoaddsthatthetemsdon'tarrangingsometeststoseewhethertheplantabsorbsanynutrient.However,evenifitothedoesn'tabsorbnutrients,killinginsectsinthiswaycouldstillbebeneficialforNicotiannefticida."Itdefinitelyprotectstheplantsfrominsects,"saysChase.eonTheplantsmayalsobenefitwhenthedeadinsectsbreakdown.Chasesaysthatthespe-ciesmaybelikeSouthAfricanRoridulaplants.whichkillinsectsinthesameway."Thereisabugthatlivesontheseplantsandisn'ttrappedbythestickyhairs.Iteatsthetrappedinsectsanddefecates(ontheground,andtheplantbenefitsfromthis,"saysChase.However.thereisnoevidenceyetthatthisiswhathappenswithNicotianainsecticida.snsbadsTheplanthasn'tyetbeenapprovedforcommercialusebyAustralia.However,ChasesaysNicotianainsecticidaisfairlyeasytogrowandcouldperhapsbeusedasabiologicalcon-trolagentforkillingharmfulinsectsinagriculture.momvbeouTnO28.WhatisstilluncleartotheresearchersaboutNicotianainsecticida?maeha0A.Whyitbenefitsfromtheinsectsitkills.nrorxngmooodrtolboodB.Whereitisabletogrowwellandfast.n可0ob9TAC.Whetheritgetsnutrientsfromtheinsectsitkills.olgogaolszmxsodD.Howsimilaritistocarnivoroussundewplants.rmonitaosd29.WhyareSouthAfricanRoridulaplantsmentionedinparagraph5?A.Toclarifyaconcept.,zonodg5B.Todrawaconclusion.ol%ooI.AC.Toexplainanaturallaw.D.Topresentaphenomenon.30.WhatisMarkChase'sopinionaboutNicotianainsecticida?白项面中鸡2面测A.Itispossiblyunfitforcommercialuse.置物路的等为张，京数出量出志中B.Ithasapplicationvaluesinagriculture.升的时好2出脉四小容，司家和：州件强【英·机·￥这游得然】<:【23新教材老高考·JD·英语】1ensesare

北京市朝阳区九年级综合练习(二)物理试卷答案第一部分

11.(2分)将20个小彩灯串联在一起接入电路中,通过插头处的电流是100mA,则通过11第10个小彩灯的电流是0100mA,通的小A;小红发现该串小彩灯中有一个小彩灯不亮了,但是其余的小彩灯都亮,则未亮的小彩灯处发生的电路故障是(小彩灯内部无其它元件)。(选填“短路”或“断路”)(小彩灯内

北京市朝阳区九年级综合练习(二)物理试卷答案第二部分（待更新）

1.我国古代劳动人民发明的石磨可使谷物脱壳、粉碎,通常用驴来拉磨把谷物磨碎,如图所示。若驴拉磨时可以看成做匀速圆周运动,磨盘半径r为0.4m1,磨杆长为.4m1,,磨盘转动一周的时间为10s,则磨杆末端的线速度DA.0.8πm/sC.0.4πm/sxwr25&=2B.0.5πm/sD.0.16πm/s