发布时间:2025-01-23 21:19:29
2M深
那么游泳池需要装的水,也就是容积:50*20*2=2000立方M
如果一跟管子工作:2000/500=4小时
现在同时工作:那么,4/2=2小时
请教电脑高手 我的电脑准备明天去维修店里清灰需要注意一些什么
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