题目内容
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[判断题]
斯托克斯(Stokes)直径ds是指同一流体中与颗粒密度相同和沉降速度相等的球体直径。()
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第6题
一球形石英颗粒分别在空气和水中按斯托克斯定律沉降,若系统温度升高,其在水中的沉降速度将( ),在空气中的沉降速度将( )。
第7题
A.60
B.15
C.30
D.42.42
第10题
It was considered fortunate by Stokes' mother in the miserable event
A.that Stokes had died in a Chicago hotel.
B.that firemen had been called to help Stokes.
C.that Stokes had been taking the prescribed medicines.
D.that Stokes had not taken her daughter with her.
第11题
在土的三相组成图中,取土粒体积Vs=1。已知某土样的土粒相对密度dS=2.70,含水率ω=32.2%,土的天然密度ρ=1.91g/cm3,水的ρw=1.0g/cm3。按各三相比例指标的定义,计算图中6个括号内的数值及Sr和γ'。