Which one is not the purpose of crushing?
A: Reduce the particle size of the material
B: Increase the specific surface area of the particles
C: Adjusting the fluidity of the powder
D: Reduce the fluidity of the material
A: Reduce the particle size of the material
B: Increase the specific surface area of the particles
C: Adjusting the fluidity of the powder
D: Reduce the fluidity of the material
D
举一反三
- During the crushing process, which one is the effective energy consumption? A: Heat B: Noise C: Increase surface area D: Vibrate
- The factors influencing the material mixing operation in the preparation process are A: Particle size distribution B: stack density C: Particle surface state D: Refractive index E: flowabilit
- Which of the following measure could not improve the settling efficiency in sedimentation tank？ （ ）。 A: To increase the surface area of the tank B: To increase the flow rate C: To improve the performance of flocculation before sedimentation D: To recycle the sludge to improve the size of particles
- Which one is not the advantage of powder? A: Have more better fluidity B: Easy to disperse, rapid dissolution and rapid effect C: Can simultaneously protect the wound and diminish swelling D: The dosage is easy to control
- Which one is not the quality control item of powder A: Particle size B: Appearance uniformity C: Lost on drying D: Release rate
内容
- 0
One way to reduce the cost of the design is to replace expensive material with cheaper __________ ones that function just as well. A: substitute B: function C: value
- 1
（）is the management system to control the material consumed， reduce inventory in the manufacture company.
- 2
Usually to reduce the amount of material in a landfill, there is a recycling center near the entrance of the landfill____。
- 3
(The more) kinetic (energy in) the particles of (a material), the (hottest) the material is.（） A: The more B: energy in C: a material D: hottest
- 4
It’s reported that Japan will _____ its auto exports to the United States _____. A: reduce ... for a third B: reduce ... by one three C: increase ... by a third D: increase ... to three times