The consequences of uneven water distribution include ( )
A: "mud ball" or "mud cake" will form, which can cause a short-circuiting phenomenon during filtration
B: the filter media may break during filtration and backwash periods
C: backwash pipes may be destroyed
D: The particles of the local support layer will move and mix with the filter media, and the filter media will run off under this situation if a large amount of uneven backwash water come through
A: "mud ball" or "mud cake" will form, which can cause a short-circuiting phenomenon during filtration
B: the filter media may break during filtration and backwash periods
C: backwash pipes may be destroyed
D: The particles of the local support layer will move and mix with the filter media, and the filter media will run off under this situation if a large amount of uneven backwash water come through
举一反三
- When carrying out vacuum filtration which of the following isNOT necessary A: Clamping the Buchner flask B: Breaking the seal before turning off the vacuum C: Folding the filter pape D: Wetting the filter paper before you start
- Which of the following functions is not provided by the fuel supply unit?_____ A: Heating B: Filtration C: Remove large amount of water from fuel D: Pressurization
- Please give the result of media filter: med{2,-3,10,5,-1} and med{2,2,80} are A: 10, 2 B: 2, 2 C: 2, 80 D: 10, 80
- Media focus may include A: Policing procedures which are close to daily life, The security situation and policing measures in the local area like the household management; the entry and exit of a country; B: Major, serious, and hard cases C: Local community connected security or local crime cases involved news coverage D: Negative news coverage of the law violation
- Some scientists think there may have been life on the Mars in the past because （） A: there is no life there now B: there is a large amount of water at the poles C: the Mars may be able to support life in the future D: conditions may have been similar to those on the Earth