
A.2.5
B.1
C.-1.5
D.-2.5
[单选题]A.2.5B.1C.-1.5D.-2.5
[单选题]( )A.2.5B.1C.-1.5D.-2.5
[单选题]( )A.2.5B.1C.-1.5D.-2.5
[单选题]A.B.C.1/4D.9/16E.5/4
[问答题]-------------.
[问答题]------------.
[问答题]--------------.
[单选题]A.B.C.1/4D.9/16E.5/4
[单选题]A.0.00013B.0.0013C.0.013D.0.13E.1.3