The way of digester mixing: ( ).
A: The digester gas is compressed and injected into the liquid through lances or diffusers.
B: Mechanical mixers, usually slow speed turbines, create liquid motion inside the digester.
C: A combination of above three ways.
D: The liquid contents are recirculated by pumping them from one location to another.
A: The digester gas is compressed and injected into the liquid through lances or diffusers.
B: Mechanical mixers, usually slow speed turbines, create liquid motion inside the digester.
C: A combination of above three ways.
D: The liquid contents are recirculated by pumping them from one location to another.
举一反三
- The more liquid a market is, the bigger the trade-off is between speed and value.
- 【单选题】Money-market securities have three basic characteristics in common EXCEPTA (). A: they are usually sold in large denominations B: they have low default risk C: they mature in one year or less from their original issue date D: they are less liquid
- Which is the superordinate of the following group of words? A: matter B: liquid C: gas D: solid
- The three-phase composition of soil refers to solid phase, liquid phase and gas phase
- The “wet” in the wet gas does not mean that a gas is wet with water but refers to the hydrocarbon liquid that condenses at surface conditions.