当给的精选

问题详情：如图所示，一个质量为m＝4kg的物体放在水平地面上，当给物体加一个水平恒力F1＝32N时，恰好可以匀速滑动 （取g=10m/s2，已知cos37°=0.8，sin37°=0.6），求：（1）物体与水平面间的滑动摩擦因数µ（2）若把原来的水平力改成与水平面成θ=...

问题详情：电动自行车常用的铅蓄电池是一种可充电的化学电源，当给它充电时是   能转化成了      能；太空飞船所用的*燃料电池是一种将         的装置(填能量形式转化)。【回答】电能化学能化学能转为...

问题详情：如图，水平地面上有斜面b，b上有一小物块a；当给a施加一个沿斜面向下的力F1时，a沿斜面下滑，此时b受地面摩擦力为零．在物块下滑过程中，再给物块施加一竖直向下的作用力F2，在物块继续下滑过程中，斜面保存静止．则（  ）    ...

问题详情：如图*所示，线圈A、B紧靠在一起，当给线圈A通以如图乙所示的电流（规定由a进入b流出为电流正方向）时，则电压表的示数变化情况（规定电流由c进入电压表为正方向）应为下列图中的（     ）【回答】D知识点：电磁感应单元测试...

问题详情：如图所示，在螺线管的上方有一个可自由转动的小磁针，当给螺线管通电时，小磁针会在图示位置静止，请在图中画出线圈的绕线方法．【回答】解：小磁针静止时N极所指示的方向﹣﹣向左，为该点磁场的方向．在磁体外部，磁感线从N极指向...

问题详情：用所给词的适当形式填空。1.Helikesmusic.Hewantstobea________(music).2.Afterhegetsupinthemorning,hetakesashowerandbrusheshis________(tooth).3.He________(exercise)everymorning.4.It’soneofour____...

问题详情：用所给词的适当形式填空1．Moreandmorepeoplebegintorealizethe_______________(important)ofthefoodsafety.2．Wehaven’tmadethe___(decide)aboutwheretogoonvacation.3．The________(dead)ofthelittlegirlmadehe...

问题详情：用所给词的适当形式填空。1.I_____________(make)alotoffriendssinceIcametothisschool.2.ThestudentsinClass1arehavinga___________(discuss)abouthowtohelppeopleinneed.3.It’s_____________(possible)fo...

问题详情：.给下列加粗的字注音溃（   ）退     歼（   ）灭      当（   ）真      锐不可当（   ）荻（   ）港    纤（   ）维      芜（   ）湖     要塞（   ）殷（   ）      督（ ...

问题详情：用所给词的适当形式填空1．Arethe________(card)inyourdesk?2．Some________(pencil)areinmypencilbox.3．Youcanseetwo________(library)inourschool.4．Mydogislost.Imust________(find)it.5．Ifoundsome________(bas...

问题详情：用所给词的适当形式填空1.Idon’tbelieveshetoldusthe__________.(true)deskmatelooked_____________,forhefailedintheEnglishtest.(happy)oldladylooked____________atme.(angry)governmentisdoingsomethin...

问题详情：用所给词的适当形式填空1．He_________(go)toschoolbybuseveryday.2．LiHuahada_________ (quickly)breakfastandthenwenttowork.3．Hewouldlove_________(have)acupoftea.4．Why_________(not)yougotothewalltomorr...

问题详情：用所给词适当形式填空teacher’soffice________(be)verysmalltwoyearsago.n’smothernevermakeshim________(do)whathedoesn’tlike.wouldbefine________(travel)inChina.motherisa________(library)._______...

问题详情：用所给词的适当形式填空1.Ayear__________(divide)into12starsigns.2.Thefirst__________(clone)sheepwasnamedDolly.3.Stop__________(argue)aboutit.Let’sbefriendsagain.4.The         (relax)m...

问题详情：用所给词的适当形式填空。cameintotheroomand______(shut)thedoor.2.Whathesaidmademevery_____(angrily).skirtis_____(expensive).I’lltakeit. is______(intelligent),TomorJill?5.Ithinkthispieceofmusi...

问题详情：用所给词的适当形式填空。1.Ithinkswimmingisnotas_______________(interest)ashiking.2.Imovedintoanewschoollastweek.Itisa___________(mix)school.3.Weallgotoffthecoach______________(quick)whenwegott...

问题详情：用所给词的适当形式填空。1．Thiswatchisnot_______(your).2．Theseare_______(Mary)photos.3．_______(I)penisthere.Hersisintheclassroom.4．Heismybrother._______(he)nameisJack.5．Thankyoufor_______(help)me.【...

问题详情：用所给词的适当形式填空。1.Thisisn’tLucy’sbag.Sheleft_________(her)atschool.2.Ihope_________(visit)theGreatWalloneday.3.NotonlyIbutalsohe_________(like)swimming.4.There_____________(be)afootb...

问题详情：用所给词适当形式填空。sepayattentionto______(listen)totheteacherinclass.onlyhaveasmallroom_____(live)in.3.Whenheheardthecrying,heranoutoftheroom           (quick).4.Itisagoodway  ...

问题详情：给下列加粗的字注音溃（   ）退     歼（   ）灭      当（   ）真      锐不可当（   ）荻（   ）港    纤（   ）维      芜（   ）湖     要塞（   ）殷（   ）      督（  ...

问题详情：用所给词的适当形式填空1._____(be)youastudent?2.Let’s_____(guess)whatthatis.3.Lookattheboy._____(he)ismyfriend._____(he)nameisJack.4.That_____(isnot)Lily.SheisLucy.5.—What_____(be)thegirl’sn...

经典语录“要说人生有什么后悔的事，就是后悔当初没有更努力一点儿，这样就能在我最好的年华遇见你。不过还好，我们注定要相逢，就早晚会相逢。我们错过了曾经的青春，我就给你一个新的青春。”我想，他不是世界上最好的男人，但在...

问题详情：用所给词的适当形式填空1．Shewantstogetherhair________(cut)inthebarbershop.2．Ibrokemyglassesyesterday.Ihavetogetthem________(repair)beforemyclassbegins.3．Food________(safe)issoimportantthattheyhave...

问题详情：用所给词的适当形式填空1.Thefire_____________(spread)veryquickly.Whenthefiremenwentthere,thehousehadbeencoveredwithfire.2.Ispentten_____________(pound)onthebook.3.Youraresofatthatyoushouldn’te...

问题详情：用所给词适当形式填空1.Don’tlettheboy________(go)alone.Hemayget__________(lose)2.Thefilmis_________(enjoy). Weall_________(enjoy)ourselveslastnight.3.Hesaidhewas_________(true)sorryaboutit.4....