The particles are put into a vacuum with a/an ______ amount of heat, which turns the ice into steam, leaving the ground particles dry and ready for use.
A: abstract
B: minimal
C: symbolic
D: potential
A: abstract
B: minimal
C: symbolic
D: potential
举一反三
- Which of the following titles best describes the passage as a whole A: The Vacuum: Its Fluctuations and Decay. B: The Vacuum: Its Creation and Instability. C: The Vacuum: A state of Absence. D: Particles That materialize in the Vacuum.
- The amount of scattering that occurs depends on the ( ). A: Size of particles B: Radiation wavelength C: Quantity of particles D: How deep the energy passes through the atmosphere
- So small () that the most powerful microscopes cannot detect them. A: are these particles B: were these particles C: these particles are D: these particles were
- Which of the following is the bulk volume of the powder？ A: True volume B: Void volume between particles C: Void volume in particles D: The sum of the above three
- Which of the following best describes the formation of “desert pavement”? A: alluvial fans are eroded to form inselbergs with flat, angular rocky surfaces B: runoff and deflation carry off the fine particles of silt and clay, leaving coarser particles behind C: groundwater in an alluvial fan evaporates, leaving behind a surface layer of hard-baked mud and boulders D: deflation removes the coarse fragments leaving behind a layer of fine sediment (loess and mud)