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【单选题】
地上__着很多书。
A.
B.
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举一反三
【单选题】Based on Question 4, Helen has an absolute advantage in
A.
dresses and Carolyn has an absolute advantage in quilts.
B.
quilts and Carolyn has a comparative advantage in dresses.
C.
both goods and Carolyn has a comparative advantage in quilts.
D.
neither good and Carolyn has a comparative advantage in dresses.
【单选题】Miguel has an absolute advantage in the production of
A.
both goods and a comparative advantage in the production of mixers.
B.
both goods and a comparative advantage in the production of toasters.
C.
neither good and a comparative advantage in the production of mixers.
D.
neither good and a comparative advantage in the production of toasters.
【单选题】Maya has an absolute advantage in the production of
A.
both goods and a comparative advantage in the production of mixers.
B.
both goods and a comparative advantage in the production of toasters.
C.
neither good and a comparative advantage in the production of mixers.
D.
neither good and a comparative advantage in the production of toasters.
【单选题】Absolute advantage is found by
A.
comparing opportunity costs.
B.
calculating the dollar cost of production.
C.
comparing the productivity of one nation to that of another.
D.
first determining which country has a comparative advantage.
【简答题】请根据自己理解,将咀嚼黏膜、被覆黏膜与其对应的组织学特点连线
【单选题】下列不属于咀嚼黏膜特点的是
A.
上皮有角化层
B.
棘细胞层细胞间桥不明显
C.
固有层厚
D.
乳头多而长
E.
胶原纤维束粗大且排列紧密
【单选题】下列不属于咀嚼黏膜特点的是
A.
正角化时有明显的粒层
B.
棘细胞层细胞间桥不明显
C.
固有层厚
D.
乳头多而长
E.
胶原纤维束粗大且排列紧密
【多选题】工程项目投资决策的原则是()
A.
科学化决策原则
B.
民主化决策原则
C.
系统性决策原则
D.
合理性决策原则
E.
反馈原则
【单选题】Which of the following is NOT true about absolute advantage?
A.
According to Adam Smith, a country may also produce goods at home that it can buy at a lower cost from other countries.
B.
That a country has an absolute advantage in the production of a product means a commodity will be produced in the country where it costs least.
C.
According to  Adam Smith, countries should specialize in the production of goods and then trade these for goods produced by other countries.
D.
A country has an absolute advantage in the production of a product when it is more efficient than any other country in producing it.
【判断题】由于饮食习惯和经济条件的限制,人体每天所需的蛋白质有50%来源于谷类。
A.
正确
B.
错误
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