2小时等、 1.You can take a walk and relax [ ]【your】 before going

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2小时等、
1.You can take a walk and relax [ ]【your】 before going to bed.
2.It takes me a long time [ ]【become】 happy again.
3.________ ________ 【镇静】and take a deep breath.Don't be nervous.
4.某导体的电阻是2欧,通过2A的电流时,1min产生多少焦耳的热量?
5.一只额定功率的450W的电饭锅,在220V的额定电压下使用,每分钟产生多少焦耳的热量?
6.一只电烙铁的额定电压是220V,在额定电压下工作时的电阻是1210欧,它的额定功率有多大?在额定电压下通电10min产生多少热量?
7.某校师生自制了一台电烘箱.电烘箱的电阻丝通过5A的电流时,每分钟可产生6.6×10的4次方J的热量.求这台电烘箱的电功率和电阻丝工作时的电阻?
8.x的平方-2X 2x-1
----------- 除以【x-1- -----】其中X=1/2
x的平方-1 x+1

1,yourself
2,to become
3,Calm down
4,q=i^2*rt=2^2*2*60=480J
5,q=p*t=450*60=2700J
6,p=u^2/r=40w q=pt=24000J
7,由q=p*t q=i^2rt 自己算下
8 表达能力需加强

Taking a walk before going to bed that would help you relax. 动词填空If__(relax) is in your plan,you can have a walk along th You can play ( 7 )guitar and take a walk there.A the B,a C,/ I would take a long walk before going to bed.为什么go要用ing形式? you should take your dog for a walk同义句 .Run before you can walk 好高鹜远 , if i were you,i would take a long walk before goning to bed为 You can't eat your cake and take it home I only want take your hand and walk with you together 高手帮我翻译选择正确答案 1.Let's take a walk,( A.will you B.shall we C.can we 1.You can walk up or down these.2.You can go and see a lot o can get a little present and to take a walk in the garden,这句