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【单选题】
关于细胞免疫，下列错误的是A.
T细胞介导，巨噬细胞参与
B.
致敏Tc细胞介导细胞毒作用
C.
由TD抗原引起
D.
CD3传递活化的第一信号
E.
抗体-肽-MHC复合物传递活化的第二信号
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【单选题】Which of the following market would most closely satisfy the requirements for a competitive market?
A.
Gold bullion
B.
Electricity
C.
Cable television
D.
All of the above represent competitive markets.
【单选题】Which of the following statements about the money market are true?
A.
Not all commercial banks deal for their customers in the secondary market.
B.
Money markets are used extensively by businesses both to warehouse surplus funds and to raise short-term funds.
C.
The single most influential participant in the U.S. money market is the U.S. Treasury Department.
D.
All of the above are true.
E.
Only (a) and (b) of the above are true.
【单选题】In order for market-penetration pricing to work, which of the following market conditions must be met?
A.
The market must not be price sensitive.
B.
Production and distribution costs must stay the same as volume increases.
C.
The market must be highly price sensitive.
D.
none of the above
【单选题】Which of the following statements on the forms of the efficient market hypothesis (EMH) is least accurate?
A.
The weak-form. EMH states that stock prices reflect current public market information and expectations.
B.
The semi-strong form. EMH addresses market and non-market public information.
C.
The strong-form. EMH assumes perfect markets.
【单选题】Which of the following is true of the stock market?
A.
It is the most widely followed financial market in the United States.
B.
It is the market where the cost of borrowing is determined.
C.
It is the market where the values of currencies are determined.
D.
It is the market where the interest rate is determined.
【单选题】Which of the following is the biggest concern of the corporate boards?
A.
The free market.
B.
The CEOs’ performance.
C.
The corporations' profit.
D.
The CEOs’ pay.
【单选题】The following market cannot be described as perfectly competitive:
A.
the unskilled labor market.
B.
the milk market.
C.
discount retailing.
D.
the agricultural grain markets.
【单选题】The following are the reasons why Saudi Arabia plays an important role in the oil market except ______.
A.
It has significant surplus capacity.
B.
It will increase its investments in production.
C.
It helps regulate the oil market.
D.
There is an oil shock in the worl
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