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圖8展示的是福娃小運(yùn)動(dòng)健將在進(jìn)行奧運(yùn)比賽,請(qǐng)你觀察圖片,   

                    

想象圖片中運(yùn)動(dòng)項(xiàng)目比賽的情景,提出兩個(gè)物理問(wèn)題,并對(duì)提出的物理問(wèn)題嘗試解答。

問(wèn)題1:_________________________________                                                        

解 答:_________________________________                                                         

問(wèn)題2:_________________________________                                                        

解 答:_________________________________   

 

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圖8展示的是福娃小運(yùn)動(dòng)健將在進(jìn)行奧運(yùn)比賽,請(qǐng)你觀察圖片,   
                    
想象圖片中運(yùn)動(dòng)項(xiàng)目比賽的情景,提出兩個(gè)物理問(wèn)題,并對(duì)提出的物理問(wèn)題嘗試解答。
問(wèn)題1:_________________________________                                                        
解 答:_________________________________                                                         
問(wèn)題2:_________________________________                                                        
解 答:_________________________________   

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圖8展示的是福娃小運(yùn)動(dòng)健將在進(jìn)行奧運(yùn)比賽,請(qǐng)你觀察圖片,   
                    
想象圖片中運(yùn)動(dòng)項(xiàng)目比賽的情景,提出兩個(gè)物理問(wèn)題,并對(duì)提出的物理問(wèn)題嘗試解答。
問(wèn)題1:_________________________________                                                        
解 答:_________________________________                                                         
問(wèn)題2:_________________________________                                                        
解 答:_________________________________   

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圖8-5-3為四個(gè)同學(xué)設(shè)計(jì)的樓梯照明電路圖,其中S1、S2分別為樓上和樓下的開(kāi)關(guān)(都是單刀雙擲開(kāi)關(guān)),要求撥動(dòng)其中任何一個(gè)開(kāi)關(guān)都能改變電燈原來(lái)發(fā)光或熄滅的狀態(tài),則在實(shí)際中最理想的方案是(    )

圖8-5-3

 

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圖8-5-1中哪些做法能確保安全用電?正確的打“√”,錯(cuò)誤的打“×”。

圖8-5-1

 

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