A、a market order.
B、a limit order.
C、a short sell.
D、margin credit.
第8题
A、assure investors that the issue will provide them a high return.
B、purchase the entire issue at a predetermined price if the quantity demanded by consumers is insufficient at the predetermined price.
C、purchase the entire issue at a predetermined price and then resell it in the market.
D、do both A and B of the above.
第10题
A、均值函数可能不再是常数
B、方差函数可能不再是常数
C、自协方差函数可能不再是常数
D、时间序列的统计规律随时间的位移而发生变化
E、不能直接建立ARMA(p,q)模型
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