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• 有一种XX-88型号电水壶的铭牌如图1，图2是电水壶的电路图，R为加热器，温控器S是一个双金属片温控开关，当温度较低时，其处于闭合状态，加热器加热．当水沸腾后，会自动断开进入保温
• 6.）Justin lives with his parents.He has a r_______on the top floor.Every day,he goes out inthe evening and leaves the windows o____.He s______ a lot of time at the pub .He dances and d______ there with his friends.He is very l_____ to leave .He goes back home from the windows and gets into bed without w_______ up others in the house.One night ,just as he is going to his room ,he sees something on his bed and it is more .He is surprised and a little af
• 几道英语填空题（初三）1.After two h______ walk,there was still no sign of the village.2.Einstein was r______ as one of the greatest scientists by people all over the world.3.One can get s______ form eating hot food and drinking cold beer in the same time.4.Peter is too s______ out,maybe he should listen to some light music.5.Some people neither b______ nor lend.6.He wrote a lot about his ______ (经历）as a country teacher.7.I thought I _______(失败)the exam,but I jus
• 补全对话：who does best in protecting the in you class?mr recyclingwhat does he ofean he loves the clothes his mother for him .his hat is made from waste bags.his school bag is made of old that were too small for him and he used to wear his father's .good .where does he live?he lives in a house of what do you mean you mean he livbes in trash?no .he lives in a house that he out of trash.the stuff to be called trash,but now it's called material.great.he is r
• 根据首字母及英文提示,填写下列问题1.s____become frightened2.s____speak or cry out in a loud voice3.s____in,at,to place4.h____take place5.n____feeling very excited6.s____cause somebody or something to go or be carried without going oneself7.g____your fathersor mothers father and mother 这里是名词所有格打不成,呵呵!1.a____say sorry to somebody2.p____large printed picture3.t____piece of work to bo done4.a____make rather angry5.r____more willingly6.c____free from dirt
• 匀速圆周运动的加速度推导中有一点不明白用几何的方法可以得到Va与Vb的夹角等于OA与OB的夹角,当⊿t非常小时 ⊿v/v=s/r（说明：由于质点做匀速圆周运动,所以Va=Vb=v,s表示弧长,r表示半径） 全文如下设一质点在A处的运动速度为Va,在运动很短时间⊿t后,到达B点,设此是的速度为Vb 由于受向心力的作用而获得了一个指向圆心 在⊿v与Va的共同作用下而运动到B点,达到Vb的速度 则矢量Va+矢量⊿v=矢量Vb,矢量⊿v=矢量Vb-矢量Va 用几何的方法可以得到Va与Vb的夹角等于OA与OB的夹角,当⊿t非常小时 ⊿v/v=s/r（说明：由于质点做匀速圆周运动,所以Va=Vb=v,s表示弧长,r表示半径） 所以⊿v=sv/r ⊿v/⊿t=s/⊿t * v/r,其中⊿v/⊿t表示向心加速度a,s/⊿t 所以a=v^2/r=rω^2=r4π^2/T^2=r4π^2n^2 F（向心力）=ma=mv^2/r=mrω^2=m4π^2/T^2r
• Let's set out now before the sun r___ .
• 根据首字母写出单词 1.The other day I fell off my bike and h___ my back.How unluckyI was.2.We must do something to s____ pamdas.or they will disappear.3.When the child hear the bell for class,they all r____ into the classroom 4.It’s very d____ to drive a car after you drink a lot of wine.5.You should eat healthily and exercise more to lost your w____ 6.It’s r_____ to rush out before your teacher when class is over.7．Many people do not know the _____(important)
• 初一英语综合填空Tom has a big dog.It can h__ Tom do many things.One day,Tom comes out of a shop and jumps into a car.His dog comes after him,but it d__ jump into the same car.It jumps into the nest o__."Come here,silly dog!"Tom shouts at it but the dog still s__ in the other car.Tom tries to start h__ car,but it doesn't m__.Then he l__ at the car again.It is not his!He is in the wrong car!And the dog is in the r__ one."It's sitting and laughing at me!"Tom thi
• 英语填空：根据文章内容和首字母填空M:Would you please tell me what you were doing when the accident happened and what you saw?W:Yes ,I was d_____ home from work.……we were both driving along Harbor Road w____ a small white Ford siddenly shot out of the side road.……He r___ into the white Ford.M:What's the s___ of the car in front of you when the accident happened?W:Well ,thirty miles anhour.Of course no m____ than that.……M:How can you make s___ that the blue car was oly
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