A.μ<0.5
B.0.5<μ<0.7
C.0.7<μ<2
D.μ>2
[单选题]A.μ<0.5B.0.5<μ<0.7C.0.7<μ<2D.μ>2
[单选题]A.μ<0.5B.0.5<μ<0.7C.0.7<μ<2D.μ>2
[单选题]A.μ<0.5B.0.5<μ<0.7C.0.7<μ<2D.μ>2
[单选题]A.μ<0.5B.0.5<μ<0.7C.0.7<μ<2D.μ>2
[单选题]A.μ<0.5B.0.5<μ<0.7C.0.7<μ<2D.μ>2
[单选题]A.μ<0.5B.0.5<μ<0.7C.0.7<μ<2D.μ>2
[单选题]A.0根B.2根C.4根D.6根
[单选题]A.1.5B.2C.3D.4
[单选题]A.0根B.2根C.4根D.6根