-
发表于:2020-01-30
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...
-
发表于:2021-09-26
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( )...
-
发表于:2019-03-07
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...
-
发表于:2019-11-10
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...
-
发表于:2022-08-07
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)...
-
发表于:2021-02-18
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________(...
-
发表于:2017-10-24
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。”...
-
发表于:2019-08-31
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.SheisLuc...
-
发表于:2019-12-18
问题详情:用所给词适当形式填空。sepayattentionto______(listen)totheteacherinclass.onlyhaveasmallroom_____(live)in.3.Whenheheardthecrying,heranoutoftheroom ...
-
发表于:2019-05-02
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),Tom...
-
发表于:2019-07-20
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...
-
发表于:2022-01-01
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(...
-
发表于:2019-06-16
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...
-
发表于:2020-07-06
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.moth...
-
发表于:2020-02-12
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_...
-
发表于:2021-02-10
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....
-
发表于:2020-03-02
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)ev...
-
发表于:2019-06-20
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_____...
-
发表于:2020-12-27
问题详情:用所给词的适当形式填空1.Idon’tbelieveshetoldusthe__________.(true)deskmatelooked_____________,forhefailedintheEnglishtest.(happy)oldladylooked____________atme.(a...
-
发表于:2020-07-23
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________(f...
-
发表于:2021-02-28
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....
-
发表于:2020-11-28
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( ...
-
发表于:2019-05-03
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....
-
发表于:2019-06-26
问题详情:用所给词的适当形式填空。1.I_____________(make)alotoffriendssinceIcametothisschool.2.ThestudentsinClass1arehavinga___________(discuss)abouthowtohelppeopleinneed.3....
-
发表于:2020-10-06
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____...