洗手的时候，老师要求小朋友要节约用水。这种行为符合的原则是 （ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26230' and id < 2196352 and id<>'2196352' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26230' and id > 2196352 and id<>'2196352' order by id asc limit 5