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.】
2、单选题： In microbial metabolism, NO3- and SO42- can be used as electron acceptors in （ ）. 选项： A:the absence of ATP B:in the presence of cytochromes C:the absence of oxygen D:the absence of enzymes 答案: 【the absence of oxygen】
4、判断题： The amount of donor used for energy production for cells synthesis related to both energy required for cell synthesis and energy released from donor oxidation. ( ) 选项： A:错 B:对 答案: 【对】
5、判断题： The net yield Yn will sometimes equals to true yield Y. ( ) 选项： A:对 B:错 答案: 【错】
第二章 单元测试
1、单选题： Which of the following is the right definition of ‘safety factor’ in engineering? （ ） 选项： A:θxmin/θx B:θx/[θxmin]lim C:θx/θxmin D:S0/Smin 答案: 【θx/θxmin】
2、判断题： The decay of active biomass is a first-order function, including the fraction for true respiration and for inert. ( ) 选项： A:对 B:错 答案: 【对】
3、判断题： Solids retention time or sludge age is the reciprocal of the net specific growth rate. ( ) 选项： A:对 B:错 答案: 【对】
4、判断题： UAP is biodegraded considerably faster than is BAP. ( ) 选项： A:对 B:错 答案: 【对】
5、判断题： The true yield cannot be estimated from experiments. ( ) 选项： A:错 B:对 答案: 【错】
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