单项选择题
A.11.02 B.10.32 C.9.98 D.10.78 E.10.21
A.1.8 B.2.0 C.2.4 D.2.6 E.2.8
A.180g,320g B.185g,315g C.190g,310g D.195g,305g E.200g,300g