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【单选题】
生活中的科学活动的特点是 ( )A.
教师选择学习内容;
B.
没有具体的活动目标和计划;
C.
学习过程中教师直接指导;
D.
学习形式以小组活动为主。
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举一反三
【判断题】The infant industry argument goes against the initiative of some developing countries to develop more advanced manufacturing industries
A.
正确
B.
错误
【单选题】Under which of the following situations will the infant industry argument for protection stand to be valid?
A.
New firms are unable to obtain funds from the financial owing to inherent imperfections in the banking system.
B.
The benefits from the early business investments accrue to the firms making these early investments.
C.
Firms that produce important military hardware cannot be established without government support.
D.
The more a country exports, the more the price of its exports fall relative to its imports.
【单选题】The infant industry argument is criticized because it relies on an assumption that:
A.
new manufacturing industries in developing nations can initially compete with established industries in developed countries.
B.
selling goods in a foreign market at below their "fair" market value is legally and ethically justified.
C.
the domestic industry in a developing nation lacks the capacity to meet demand.
D.
firms are unable to make efficient long-term investments by borrowing money from the domestic or international capital market.
【单选题】The infant industry argument is that ___________.
A.
comparative advantage is irrelevant to economic growth.
B.
developing countries have a comparative advantage in agricultural goods.
C.
developing countries have a comparative advantage in manufacturing.
D.
developing countries have a potential comparative advantage in manufacturing.
【简答题】已知滑阀节流口流量方程式为 ，式中，Q为通过节流阀节流口的流量；P为节流阀节流口的前后油压差；x v 为节流阀的位移量；c为流量系数；w为节流口面积梯度；ρ为油密度。试以Q与P为变量(即将Q作为P的函数)将节流阀流量方程线性化。
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