A.20%
B.45%
C.65%
D.85%
[单选题]A.20%B.45%C.65%D.85%
[单选题]A.20%B.45%C.65%D.85%
[单选题]A.20%B.45%C.65%D.85%
[单选题]A.20%B.45%C.65%D.85%
[问答题]------------.
[问答题]--------------.
[单选题]A.a=25,6=-20B.a=b=25C.a=-25,b=0D.a=1,b=2
[单选题]A.f(x)无间断点B.f(x)有间断点x=lC.f(x)有间断点x=0D.f(x)有间断点x=-1