坝基由a、b、c三层水平土层构成，厚度分别为8m，5m，7m，垂直向和水平向的渗透系数分别为kaV=0.01m/s，kaH=0.04m/s，kbV=0.02m/s，kbH=0.05m/s，kcV=0.03m/s，kcH=0.09m/s。问垂直渗流和水平渗流时的等效渗透系数最接近下列哪个选项的数值？（）
坝基由a、b、c三层水平土层构成，厚度分别为8m，5m，7m，垂直向和水平向的渗透系数分别为kaV=0.01m/s，kaH=0.04m/s，kbV=0.02m/s，kbH=0.05m/s，kcV=0.03m/s，kcH=0.09m/s。问垂直渗流和水平渗流时的等效渗透系数最接近下列哪个选项的数值？（）
A.kV=0.0734m/s，kH=0.1562m/s
B.kV=0.1562m/s，kH=0.0734m/s
C.kV=0.0156m/s，kH=0.0600m/s
D.kV=0.0734m/s，kH=0.0600m/s
正确答案：kV=0.0156m/s，kH=0.0600m/s