经济效益（economic effect）
第1题：
A major indicator of a country's economic growth is the change in its gross national product, or GNP, which is the total value of goods and services produced by an economic system in a year.()
此题为判断题(对，错)。
第2题：
生产的经济区域（Economic region of production）
生产的经济区域是指等产量线斜率为负的投入品组合。没有一个厂商会在等产量线斜率为正的点上运行，因为在这种点上总会有一种投入品的边际产品为负。
第3题：
The methods and techniques for determining the economic costs, the environmental impact, the economic returns, and the probability for success are called:
A . Feasibility studies.
B . Bills of materials.
C . Pert charts.
D . Managerial reserves.
E . None of the above
第4题：
(46)It may be said that the measure of the worth of any social institution is its effect in enlarging and improving experience; but this effect is not a part of its original motive.此处译文为：
第5题：
single effect evaporation
第6题：
A、选择要创建RollOver的对象，先选择“Effect-RollOver-CreatRollOver”命令，再选择“Effect-RollOver-EditRollOver”命令，对当前选择的对象进行编辑，完成后选择“Effect-RollOver-FinishEditingRollOver”命令
B、选择要创建RollOver的对象，先选择“Effect-RollOver-EditRollOver”命令，再选择“Effect-RollOver-FinishEditingRollOver”命令
第7题：
A、Economics, mathematics and physics
B、Economics, mathematics and physic
C、Economic, mathematics and physics
D、Economic, mathematic and physics
第8题：
此题为判断题(对，错)。
第9题：
Tyndall effect
第10题：