1、多选题：
Which of the following saying are correct（ ）.
选项：
A:Quantification analysis makes processes reliable and cost-effective.
B:Molecular biology is the substitute for traditional methods in exploring microbial communities.
C:Empiricism is very important in environmental biotechnology besides the principles of microbiology and engineering.
D:Microbiological treatment technologies developed at the beginning of the 20th century, such as activated sludge and anaerobic digestion, remain mainstays today.
答案: 【Quantification analysis makes processes reliable and cost-effective.;
Empiricism is very important in environmental biotechnology besides the principles of microbiology and engineering.;
Microbiological treatment technologies developed at the beginning of the 20th century, such as activated sludge and anaerobic digestion, remain mainstays today.】