For non-coherent soils such as gravels, what kind of soil structure does it usually form? ()
A. Massive structure
B. Single grain structure
C. Layer structure
D. Blocky structure
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What is the main cause of consolidation settlement of building?
A. Wind
B. Ground water
C. Load
D. Plant
In generally, soil is composed of()、() 、and() .
()is the basis of soil mechanics, since it decides whether a soil is frictional or cohesive .
In terms of engineering, soils differ in different locations because they are influenced by five soil formation factors.Those factors are (), (), (), ()and ().