
A.-2/3
B.2/3
C.-3/2
D.3/2
[单选题]A.-2/3B.2/3C.-3/2D.3/2
[单选题]A.-2/3B.2/3C.-3/2D.3/2
[单选题]A.-2/3B.2/3C.-3/2D.3/2
[单选题]A.-2/3B.2/3C.-3/2D.3/2
[单选题]A.-2/3B.2/3C.-3/2D.3/2
[单选题]A.-2/3B.2/3C.-3/2D.3/2
[单选题]A.-2/3B.2/3C.-3/2D.3/2
[单选题]A.E-A和E+A都不可逆B.E-A不可逆,E+A可逆C.E-A和E+A都可逆D.E-A可逆,E+A不可逆