proposition:

I. single$-$choice question $($each item $3$ points, total $36$ points$)$

If the liquid index of a certain cohesive soil is $I_L=0\mathrm{.}7,$ then the state

of the soil is:

A$.$ stiff,

B$.$ plastic;

C$.$ soft plastic;

D$.$ flow plastic

If $d_{60}=12\mathrm{.}5mm$ and $d_{10}=0\mathrm{.}03mm$ are obtained from the particle size

distribution curve of a certain soil, then the non$-$uniformity coefficient $C_u$ of the

soil is:

A$.416\mathrm{.}7$

B$.4167$ ;

C$.2\mathrm{.}4{10}^{-3}$;

D$.12\mathrm{.}53$

The load corresponding to the maximum depth of the plastic development

zone in the foundation equal to $\frac{1}{3}$ or $\frac{1}{4}$ times the width of the foundation is

called

A$.$ temperary plastic lond;

B$.$ ultimate load;

C$.$ critical load;

D$.$ destructive load

The relationship between permeability and hydraulic gradient is:

A$.$ proportional;

B$.$ Inversely proportional;

C$.$ directly proportional to the square of the hydraulic slope;

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