【单选题】It is commonly argued that national defense is a public good. Nevertheless, the weapons used by the U.S. military are produced by private firms. We can conclude that
A.
resources would be used more efficiently if the government produced the weapons.
B.
resources would be used more efficiently if private firms provided national defense.
C.
weapons are rival in consumption and excludable, but national defense is not rival in consumption and not excludable.
D.
national defense is rival in consumption and excludable, but weapons are not rival in consumption and not excludable.
【单选题】下列关于鼻咽癌说法哪一项是错误的:( )
【单选题】The national plant of New Zealand is the ______.
【单选题】一般情况下,企业提供产品的平均收益若低于以下哪种成本就停止营业( )
【简答题】任意输入 N 个数,统计其中正数、负数和零的个数。
【单选题】企业揭示差异和矛盾的财务分析方法是( )。
【单选题】抗日战争时期,中国共产党在国民党统治区公开出版的机关报是()
【单选题】关于诊断思维基本原则的叙述,下列哪项不正确
【单选题】抗日战争时期,中国共产党在国民党统治区公开出版的机关是( )。