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随着人们环保意识的提高,节水型洁具正在进入家庭。所谓节水型洁具,是指每冲洗一次耗水量在6L以下的洁具
随着人们环保意识的提高,节水型洁具正在进入家庭。所谓节水型洁具,是指每冲洗一次耗水量在6L以下的洁具
2025-04-08 05:44:24
推荐回答(1个)
回答1:
解:
(1)每冲洗一次需要水的质量m
0
=ρV
0
=1×10
3
Kg/m
3
×5×10
-3
m
3
=5Kg,2000kg水供冲洗次数n= 400次, (或由2000kg水的体积V
总
=2m
3
, 求出2000kg水供冲洗次数n=400次)每月节约的水的体积V=(9L-5L)×10×30=1200L=1.2m
3
。
(2)m=ρV=1×10
3
Kg/m
3
×1.2m
3
=1.2×10
3
Kg=1.2t。
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