采用某种工艺方案进行生产所需的年度工艺成本可按Cn=DQ+B进行计算,公式中B是( )。
A.生产纲领 B.原材料费用C.可变费用 D.不变费用
参考答案:D
The world famous director, three of _____ movies won Oscar awards, is reported to have retired.
A.whose
B.which
C.whom
D.his
只有经过()的原始凭证,才能作为编制记账凭证和登记账簿的依据。