处理:通过化学或生物化学的方法,使废水中的污染物转化为无害的物质,或是转化为易于分离的物质然后再分离。
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处理:通过各种方法使污染物从废水中分离出来,一般不改变污染物的化学本性
自来水在运输过程中需要在水中添加臭氧,以防止自来水运输过程中二次污染
A. 对
B. 错
Fill in the following blanks with the information you learn from the reading text.The philosophy in the pre-Qin times was marked by the emergence of various ancient philosophical views. The most influential schools were , , Mohism and .