A公司和B公司是生产相同产品的企业，两家各占市场份额的一半，故两家公司的需求曲线均为P=2400-0．1Q，但A公司的成本函数为：TC=400000+600Q_A+0．1QA²，B公司的成本函数为：TC=600000+300QB+0．2QB²，现在要求计算：

（1）A和B公司的利润极大化的价格和产出量

（2）两个企业之间是否存在价格冲突？

正误判断题

　　NEW YORK – The five men facing trial in the Sept. 11 attacks will plead not guilty. They would state their criticisms of U.S. foreign policy, the lawyer for one of the defendants said Sunday.

　　Scott Fenstermaker, the lawyer for accused terrorist Ali Abd al-Aziz Ali, said the men would not deny their role in the 2001 attacks but “would explain what happened and why they did it.”

　　Ali and four other men are accused of killing nearly 3,000 people in the nation's deadliest terrorist attack. The U.S. Justice Department announced earlier this month that they will face a civilian federal trial just blocks from the World Trade Center site.

　　Ali is also known as Ammar al-Baluchi. He is a nephew of claimed 9/11 planner, Khalid Sheikh Mohammed.

　　Mohammed, Ali and the others will explain “their assessment of American foreign policy,” Fenstermaker said.

　　“Their assessment is negative,” he said.

　　Fenstermaker met with Ali last week at the U.S. prison at Guantanamo Bay in Cuba. He has not spoken with the others. But he said the men have discussed the trial among themselves.

　　Fenstermaker was first quoted in The New York Times in Sunday's editions.

　　Critics of Attorney General Eric Holder decided to try the men in a New York City civilian courthouse. It has warned that the trial would provide the defendants with a propaganda platform.

　　Dean Boyd, a spokesman for the Department of Justice, said Sunday that while the men may attempt to use the trial to express their views, “we believe the courts and the federal judge may govern the trial. The course of justice will be led appropriately and with minimal break, as federal courts have done in the past.”

　　1. The five men thought that the U.S. foreign policy should be blamed for the 911 attack.   1   

　　2. Scott Fenstermaker is the lawyer for Ali Abd al-Aziz Ali and four other men.   2   

　　3. Nearly 3,000 people were killed in the 911 attack.   3   

　　4. The press didn't care about this civilian federal trial.   4   

　　5. We can infer from the article that the prisoners also have their freedom to express their own views in the U.S.A.   5   

唯物辩证法的思维方法有（ ）。

货币供给的过程可分为两个紧密相连的部分（）

马克思主义哲学认为，本质是事物的根本性质，是构成事物诸要素之间的（   ）。

甲公司经营的某网站取得了一部热播电视剧的网络独家直播权，乙在观剧过程中反感于插播广告，利用自己的专业特长开发出屏蔽该剧所有广告的软件，并公开了软件下载渠道，受到许多网络用户的欢迎。乙从中发现商机，改进软件，在剧集播放时插入丙公司的产品广告，并从丙公司收取相应的报酬。以下对乙行为的表述正确的有哪几项？（   ）

世界上最著名的场外交易市场是（ ）

边际消费倾向

 --- A: Could we make a tentative appointment for, say, this Saturday?  

  ---B:              

在短期，全部总成本等于（      ）