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我国水资源严重缺乏,节水需要我们每个人从每件事开始。我们就以学校卫生清扫所用的拖把为研究对象,调查探究了老式布条式拖把和胶棉式拖把哪一个更节水、经济。一、探究过程(一)用水情况调查与数据分析。1.普通拖把清洗情况调查。清洗普通拖把都在卫生间的水池中,学校教学楼共五层,为此我们特意分楼层在学校调查普通拖把的使用情况。利用秒表记录每人冲洗拖把的时间;观察并询问一次拖地期间(早自习前、下午正课开始前)每班共冲洗多少次拖把。经统计得知,平均每把拖把每
A serious shortage of water resources in our country, we need everyone to save water from the beginning of everything. We used the mop for school hygiene cleaning as the research object and investigated whether the old cloth mop and the gummy mop were more water-saving and economical. First, the exploration process (A) water use survey and data analysis. 1. Ordinary mop cleaning survey. Ordinary mop cleaning toilet in the pool, the school teaching building a total of five, for which we deliberately sub-floor in the school to investigate the use of ordinary mop. Use a stopwatch to record the time each person rinses the mop; observe and ask how many times the mop should be rinsed once during the mopping-up period (before going to self-study and before the beginning of afternoon in the afternoon). Statistics show that, on average, every mop