（）又叫超买超卖指标。
A.ADL
B.ADR
C.OBOS
D.MACD
参考答案：C
—Do you consider yourself a rude person?
— not. I always have good manners.
A. Probably B. Usually C. Certainly
(3)在一定温度下，此反应的K随着反应系统压力的增大( )。
A．)变小 (C
