第二章测试1.Increasing ionic strength would compress the electric double layer and increase the stability of the colloid. ( )
A:错 B:对
答案:A
2.G value and GT value are employed to design coagulation tanks, because they can describe the coagulation process comprehensively. ( )
A:对 B:错
答案:B
3.The hydraulic condition of the rotary baffle plate flocculation tank is better than that of the reciprocating type, and head loss of the rotary type is 40% less than that of the reciprocating type. ( )
A:对 B:错
答案:A
4.There are many ways for the control of coagulant dosage and automatic detection, including ( ).
A:dosing according to experience B:light transmission pulsation detector C:streaming current detector (SCD) D:establishing a mathematical model according to the quantity and quality of raw water
答案:BCD
5.Which one below belongs to organic coagulant ( ).
A:poly aluminum chloride (PAC) B:polyacrylamide (PAM) C:aluminum sulfate D:lime glue
答案:B
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