【单选题】A crime of revenge is carried out by someone who _____________ .
A.
has been wronged in some way
B.
is in great need of money
【单选题】Out of ______ revenge, he did his worst to blacken her character and rain her reputation.
【单选题】一个具有n个顶点的有向图最多有( )条边。
【判断题】在变动成本法下,产品的变动性生产成本等于变动性直接成本和变动性制造费用之和。