• 2022-05-29 问题

    How many minutes ofConcrete mixed in stationary mixers and transported by non-agitating equipment shall be pay? A: 30 minutes B: 20 minutes C: 40 minutes D: 15 minutes

    How many minutes ofConcrete mixed in stationary mixers and transported by non-agitating equipment shall be pay? A: 30 minutes B: 20 minutes C: 40 minutes D: 15 minutes

  • 2022-05-29 问题

    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.

    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.

  • 1