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据新闻媒体报道,一些城市的空气质量不好,尘土飞扬,与建筑工地上装载混凝土浆的运输车洒下的混凝土浆有关.那么运输车为什么会洒下混凝土浆?如何才能
According to news media reports, the air quality of some cities is not good and the dust is so fierce. It is related to the concrete slurry poured from concrete trucks on the construction site. Then why are the transport vehicles sprinkling the concrete slurry?