A.
B.
C.
D.
[单选题]A.4B.6C.8D.10
[单选题]A.-2/3B.2/3C.-3/2D.3/2
[单选题]A.4B.6C.8D.10
[单选题]A.-2/3B.2/3C.-3/2D.3/2
[单选题]A.4B.6C.8D.10
[单选题]A.-2/3B.2/3C.-3/2D.3/2
[单选题]A.4B.6C.8D.10
[单选题]A.-2/3B.2/3C.-3/2D.3/2
[单选题]A.371.13kgB.365.18kgC.338.35kgD.328.16kg