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
A: Having dumped sewage
B: Being dumped sewage
C: Dumped sewage
D: Dumping sewage
举一反三
- 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.
- _____ is NOT pollution prevention equipment. A: Oily water separator B: Sewage treatment plant C: Fuel oil separator D: Incinerator
- Biological sewage treatment plant work on the ______.: aeration process|centrifuging process|heating process|settling process
- affects people immediate environments and leads to water related illnesses.(Sewage disposal / Processing waste gases)
- Please find the word that is equivalent to the definition.fit for drinking（） A: sewage B: vegetation C: potable D: drainage E: waterlogged F: sedimentG．habitatH．erosion