单项选择题
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？（）
A. VARCHAR2 B. CHAR C. NVARCHAR2 D. CLOB E. LONG
单项选择题 What can you determine about the following linguistic sorts based only on their names？（） 1. GERMAN 2. FRENCH_M
多项选择题 WhichofthefollowingarevalidsettingsfortheNLS_COMPparameter？（）
单项选择题 Whichofthefollowingdatatypesstoretime-zoneinformationinthedatabase？（）
