A number of biological sewage treatment plants are in use at sea but nearly all work on what is called the extended aeration processBasically the consists of oxygenating the liquor by bubbling air through itAccording to the above two sentences, the word "this" means （）.
1、A number of applications issue the fol
A number of applications issue the following SQL statement:SELECT d.deptno, e.empno, e.salary FROM department d INNER JOIN employee e ON d.deptno...
2、You notice a high number of waits for
You notice a high number of waits for the db file scattered read and db file sequential read events in the recent Automatic Database Diagnost...
3、The basic process of biological sewage
The basic process of biological sewage treatment consists of the liquor either by bubbling air through it or by agitating the surface（）AoxygenatingBoxidizingCdeoxygenatingDproportioning
4、What is the subnetwork number of a hos
What is the subnetwork number of a host with an IP address of 172.16.210.0/22?（）A 172.16.42.0B 172.16.107.0C 172.16.208.0D 172.16.252.0E 172.16.254.0
5、The maximum number of passengers a T-B
The maximum number of passengers a T-Boat may carry（）.Ais stated on the vessel's Certificate of InspectionBis the number authorized in the Navigation RulesCdepends on the number of lifejackets you carryDis the number authorized by your license
6、A number of cylinder liners are enclos
A number of cylinder liners are enclosed in one cast iron casing to form a （）.Acylinder coverBcylinder blockCcylinder frameDbed-plate