Which of the following operation is correct?______.
A: After being treated in the bio-filter tank, the sewage is discharged overboard
B: After going through the biological film, the sewage is discharged overboard
C: The sewage treated in the bio-filter tank flows into the sterilization compartment
D: The sewage is first collected in sterilization tank then discharged into the bio-filter tank.
A: After being treated in the bio-filter tank, the sewage is discharged overboard
B: After going through the biological film, the sewage is discharged overboard
C: The sewage treated in the bio-filter tank flows into the sterilization compartment
D: The sewage is first collected in sterilization tank then discharged into the bio-filter tank.
举一反三
- Dump sewage into oceans and rivers is a serious form of pollution. A: Having dumped sewage B: Being dumped sewage C: Dumped sewage D: Dumping sewage
- Which of the items are exempted from environmental protection tax? A: Taxable pollutants discharged by large-scale farms B: Taxable pollutants discharged by mobile pollution sources such as boats and aircrafts C: Sewage discharged directly to the environment by a school D: Solid waste comprehensively utilized by taxpayers that conforms to the national and local environmental protection standards
- In the tank there is a sending unit which tells the fuel gauge how much fuel is left in the tank．
- 智慧职教: Tank unit capacitance varies as a function of the _____ in the tank.
- Biological sewage treatment plant work on the ______.: aeration process|centrifuging process|heating process|settling process