来自高伟的问题
Theacceptablecoliform(大肠杆菌)countsforfecal(粪便)contamination(污染)accordingtoU.S.standardsatbeaches(海(湖、河)滩)is:()■.one/100mlofwater■.onehundred/100mlofwater■.onethousand/100mlofwater■.none
Theacceptablecoliform(大肠杆菌)countsforfecal(粪便)contamination(污染)accordingtoU.S.standardsatbeaches(海(湖、河)滩)is:()
■.one/100mlofwater
■.onehundred/100mlofwater
■.onethousand/100mlofwater
■.none
