欧美丰满肥臀一区,亚洲乱伦性爱小说视频,最新无码人妻在线不卡,京广成人小电影a三区,先锋色色AV网,亚洲伊人涩涩

原標題：国产美女遭强高潮开双腿

學習快評丨qibao666888　　羅??(luo)塘??(tang)高??(gao)級??(ji)中??(zhong)學??(xue) 劉??(liu)老??(lao)師??(shi)：我??(wo)們??(men)現(xiàn)??(xian)在??(zai)所??(suo)用??(yong)到??(dao)的??(de)器?(qi)材?(cai)是??(shi)一??(yi)節(jié)??(jie)干??(gan)電??(dian)池??(chi)、一?(yi)個??(ge)開??(kai)關??(guan)、一??(yi)個??(ge)滑??(hua)動??(dong)變??(bian)阻??(zu)器??(qi)和??(he)一??(yi)個?(ge)電?(dian)流??(liu)表??(biao)??。??現(xiàn)??(xian)在??(zai)在??(zai)這??(zhe)個??(ge)電??(dian)路??(lu)里?(li)接??(jie)了??(le)一??(yi)個??(ge)干??(gan)燥??(zao)的??(de)風??(feng)箏??(zheng)線??(xian)?，接??(jie)下??(xia)來??(lai)將??(jiang)開??(kai)關??(guan)閉??(bi)合??(he)?，可??(ke)以??(yi)看??(kan)到??(dao)電??(dian)流??(liu)表?(biao)的??(de)示??(shi)數(shù)??(shu)仍??(reng)然??(ran)為??(wei)0??。說??(shuo)明??(ming)在?(zai)干??(gan)燥??(zao)環(huán)??(huan)境??(jing)下??(xia)?，風??(feng)箏??(zheng)線?(xian)是??(shi)不秘(bu)導??(dao)電??(dian)的?(de)??。接??(jie)下??(xia)來??(lai)將??(jiang)開??(kai)關??(guan)斷??(duan)開??(kai)?，取??(qu)下??(xia)干??(gan)燥??(zao)的??(de)風??(feng)箏??(zheng)線??(xian)?，將??(jiang)這??(zhe)根??(gen)風??(feng)箏??(zheng)線??(xian)泡??(pao)入??(ru)含??(han)有??(you)雜??(za)質??(zhi)的??(de)水??(shui)中??(zhong)?，再??(zai)將??(jiang)它??(ta)取??(qu)出??(chu)??。然??(ran)后??(hou)將??(jiang)浸??(jin)滿??(man)水??(shui)的??(de)風??(feng)箏??(zheng)線??(xian)接?(jie)入??(ru)電??(dian)路??(lu)?，閉??(bi)合??(he)開??(kai)關??(guan)?，可??(ke)以??(yi)發(fā)??(fa)現(xiàn)??(xian)電??(dian)流??(liu)表??(biao)的??(de)指?(zhi)針??(zhen)有??(you)了??(le)明??(ming)顯??(xian)偏?(pian)轉??(zhuan)???！　∠??(xiao)防??(fang)提??(ti)醒??(xing)??，放??(fang)風??(feng)箏??(zheng)時?(shi)??，要?(yao)保?(bao)持??(chi)風??(feng)箏??(zheng)線??(xian)干??(gan)燥??(zao)??，如??(ru)遇??(yu)天??(tian)氣??(qi)變??(bian)化??(hua)??，要??(yao)及??(ji)時??(shi)收??(shou)好??(hao)風??(feng)箏??(zheng)離??(li)開?(kai)??。??。