从4名男生和2名女生中任选3人参加演讲比赛,则所选3人中恰有1名女生的概率是 .
ff the economy is just beginning to come out of a recession, which of the following would represent a typical sequence of phases in the business cycle()
A. Expansion, business peak, contraction, recessionary trough.
B. Expansion, business peak, recessionary trough, contraction.
C. Depression, expansion, business peak, contraction.
明细分类账是根据二级账户或明细账户开设账页,分类、连续地登记经济业务以提供明细核算资料的账簿,其格式有三栏式、______、______和横线登记式(或称平行式)等多种。