【单选题】According to Ricardo's theory of comparative advantage, countries should:
A.
specialize in the production of those goods that it produces most efficiently.
B.
specialize in the production of those goods that their competitors in the world market currently have monopolies on.
C.
produce all the products for which they have an absolute advantage.
D.
produce only the products for which they have an absolute advantage.
【单选题】In David Ricardo's theory of comparative advantage,
A.
international trade is a zero-sum game in which one trading partner's gain comes at the expense of another's loss.
B.
liberalization of international trade will enhance the welfare of the world's citizens.
C.
is a short-run argument, not a long-run argument.
D.
both answers a and b are correct. has been superseded by the now-orthodox view of mercantilism.
【简答题】下列代数系统是否为环?若是环,是否为整环、域? (1)(A,?,∩),其中A=ρ({a}),?,∩分别为对称差及交运算. (2)(B,+,×),其中B={a+bi|a,b∈Q},+,×为算术加、乘. (3)(C,+,·),其中C={(x,y)|x,y∈R},设α 1 =(a 1 ,b 1 ),α 2 =(a 2 ,b 2 ),α 1 、α 2 ∈C,α 1 +α 2 =((a 1 +a 2 ,b ...
【简答题】当x→1 时,无穷小量1-x 与(1)1-x2,(2)(1/2)(1-x2) 是否同阶?是否等价?
【单选题】A商场2018年5月22日外购一批商品,取得增值税专用发票注明的价格500万元,增值税额85万元,双方协议约定的现金折扣条件是:2/10;1/20;N/30(假定计算现金折扣时不考虑增值税)。A商场2018年5月30日支付了上述款项,则下列会计表述不正确的是( )。
【简答题】(1)规定运算⊕是:a⊕+b =a×b+1,则(-2)⊕+3=( ); (2)规定运算 是:a b=a×b+a+b+1,则(-3) 3=( )
【简答题】请说出下列各式运算顺序: (1)3 2 -50÷2 2 × -1的运算顺序是( ); (2)( ) 2 ×[(-4)-(- )]的运算顺序是( )
【判断题】对于中华传统道德,我们都要加以继承和发扬
【单选题】In David Ricardo's theory of comparative advantage,
A.
liberalization of international trade will enhance the welfare of the world's citizens.
B.
has been superseded by the now-orthodox view of mercantilism.
【单选题】乙商场于 2018年 5月 22日外购一批商品,取得增值税专用发票注明的价款 500万元,增值税税额 85万元。购买协议约定的现金折扣条件为 2/10, 1/20, N/30(现金折扣不考虑增值税)。乙商场于 2018年 5月 30 日支付了上述款项,则下列会计表述中不正确的是( )。