更多"An unconsolidated aggregate of silt"的相关试题:
[单项选择]Silt and heavy run-off from farms in North Carolina were caused by ______.
A. Hurricanes Irene and Floyd
B. Hurricanes Floyd and Carla
C. an eruption from a volcano
D. deforestation of trees
[单项选择]The particles comprising a given cloud are continually changing, as new ones are added
A B
while others are taking away by moving air.
C D
[单项选择]Smoke particles and other air pollutants are often trapped in the atmosphere, thus forming dirty fog.
A. constrained
B. caught
C. concealed
D. concentrated
[单项选择]Brushing removes larger particles, but dentists suggest brushing the back of the tongue as well, where food residues and bacteria ______.
A. flourish
B. collaborate
C. embark
D. congregate
[单项选择]The perpetual spinning of particles is much like that of a top, with one significant difference: unlike the top, the particles have no need to be wound up, for ______ is one of their ______ properties.
A. (A) revolution...radical
B. (B) motion...intangible
C. (C) rotation...intrinsic
D. (D) acceleration...lesser
E. (E) collision...hypothetical
[单项选择]By immersing ore particles in water, ______.
A. we can get ore particles of equal size
B. we can purify aluminum particles
C. we can filter out aluminum
D. we can improve the working conditions around
