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hui bao jing de dian chi
Author(s): 
Pages: 42
Year: Issue:  1
Journal: Science Initiation

Keyword:  电池煤气报警器洗衣机超市厨房熄火衣服延误启发;
Abstract: <正>有一天,妈妈在厨房里做饭,做着做着,突然,煤气熄火了。于是,妈妈仔细检查了一下,原来不是没煤气了,而是电池没电了。于是,妈妈只好派我去超市重新买了一颗电池回来。虽然咱家附近有超市,还算方便,但是还是延误了做饭。于是,我因此受到了启发,能不能给电池安装一个可以提醒我们的"报警器"呢?就像洗衣机洗完衣服之后,会发出一种滴滴声,提醒主人晾衣服一样。如果电池在没多少电的时候提前发出"滴
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