(武汉大学2009年考研试题)在佛洛德相似准则和雷诺相似准则下，流速比尺λ
v
、时间比尺λ
t
分别为( )。
A．佛洛德：λ
v
=λ
t-1
λ
t
=λ
t2
；雷诺：λ
v
=λ
t1/2
λ
t
=λ
t1/2 B．佛洛德：λ
v
=λ
t-1
λ
t
=λ
t1/2
；雷诺：λ
v
=λ
t1/2
λ
t
=λ
t2 C．佛洛德：λ
v
=λ
t1/2
λ
t
=λ
t2
；雷诺：λ
v
=λ
t-1
λ
t
=λ
t1/2 D．佛洛德：λ
v
=λ
t1/2
λ
t
=λ
t1/2
；雷诺：λ
v
=λ
t-1
λ
t
=λ
t2
