第10题: [单项选择]Where does this conversation most probably take placeWhere do the speakers work A. At an art school. B. At a newspaper office. C. At a stadium. D. At a publishing house. 参考答案:B 答案解析:[听力原文] W: I understand that the art and news section was assigned to Jane and the sports page to
第22题: [单项选择]已知某污水总固体含量为680mg/L,其中溶解固体为420mg/L,悬浮固体中的灰分为60mg/L,则污水中的SS和VSS含量分别为( )。 A. 200mg/L和60mg/L B. 200mg/L和360mg/L C. 260mg/L和200mg/L D. 260mg/L和60mg/L 参考答案:C 答案解析:[解析] 总残渣(总固体)=总可滤残渣(溶解固体)+总不可滤残渣(SS),总不可滤残渣(SS)=VSS(挥发性固体)+灰分。