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单项选择题

2号长方旗长宽分别为:
A、210cm、 l80cm
B、135cm、 115cm
C、103cm、90cm
D、70cm、60cm

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多项选择题
广义平稳随机过程的两个条件是（ ）
A．
B．
C．
D．
单项选择题
In excess capacity model, the monopolist invests in excess capacity in period 1 in order to (    ) its costs in period 2; this investment lowers the monopolist's costs in relation to a potential entrant's costs in period 2. So the monopolist (   ) entry and earns larger profits over the two periods. A.
lower, deters B.
lower, encourages C.
increase, deters D.
increase, encourages
单项选择题
   Which of the following statements about financial markets and securities are true?
A．Many common stocks are traded over-the-counter, although the largest corporations usually have their shares traded at organized stock exchanges such as the New York Stock Exchange.
B．As a corporation gets a share of the broker’s commission, a corporation acquires new funds whenever its securities are sold.
C．Because of their short terms to maturity, the prices of money market instruments tend not to fluctuate wildly.
D．Only (a) and (c) of the above are true.
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