（单选题）
In a database with the database character set of US7ASCII and a national character set of UTF-8, which datatypes would be capable of storing Unicode data by default?（）
AVARCHAR2
BCHAR
CNVARCHAR2
DCLOB
ELONG
正确答案
答案解析
略
AVARCHAR2
BCHAR
CNVARCHAR2
DCLOB
ELONG
