在散打比赛中，教练员临场指挥的中心内容就是（）和（）。
参考答案：战术指导；心理调节
An analyst does research about commodity market. Which of the following is least likely a motivation of investing in commodities（）
A. Commodity markets have lower volatility than the equity markets.
B. Commodities have a positive correlation with the unexpected inflation.
C. Commodities have a negative correlation with the stock and bond retums.
一幢大厦价值9800万元，有人认为35年内其可能遭受一次损失的概率超过80%，则最大可能损失是( )万元。
A．19600 B．9800 C．7840 D．1960
