单项选择题
A.开盘价 B.收盘价 C.全天最高价 D.全天最低价
A.10% 25% B.5% 25% C.10% 30% D.5% 30%
A.向左平移 B.向右平移 C.集中于波峰和波谷 D.集中于两极