A.一条曲线 B.一条直线 C.两条直线 D.两条曲线
A.3 B.4 C.5 D.6
A.1%,0.3% B.1%,0.5% C.5%,0.3% D.5%,0.5%
A.借贷记帐 B.复式记账 C.单式记帐 D.收付记帐
A.0.7 B.0.6667 C.0.3 D.0.0333