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學習快評丨qibao666888　　當??(dang)下??(xia)春??(chun)光??(guang)正??(zheng)好??(hao)??，很??(hen)多??(duo)人??(ren)選??(xuan)擇??(ze)外??(wai)出??(chu)春?(chun)游?(you)??，放??(fang)風??(feng)箏??(zheng)也??(ye)成??(cheng)為??(wei)受??(shou)歡??(huan)迎??(ying)的??(de)項??(xiang)目??(mu)之??(zhi)一??(yi)??，但??(dan)放??(fang)風??(feng)箏??(zheng)引?(yin)發(fā)??(fa)的??(de)危??(wei)險??(xian)事?(shi)件??(jian)??，也??(ye)進??(jin)入?(ru)了??(le)高??(gao)發(fā)??(fa)期??(qi)??。??看??(kan)似??(si)柔??(rou)軟??(ruan)的??(de)風??(feng)箏??(zheng)線??(xian)??，可??(ke)能??(neng)成??(cheng)為??(wei)隱??(yin)形??(xing)的??(de)“兇??(xiong)器??(qi)”???！　×_??(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??(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(zhì)??(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(zhuǎn)??(zhuan)??。。