A.20.4 B.24.17 C.16.32 D.19.37
A.18%18% B.19.56%18% C.18%20.56% D.18%19.56%
A.投資和再投資 B.資金能產(chǎn)生利潤 C.資金具有增值性 D.市場供求關(guān)系的變化