【单选题】已知tan100°=k,则sin80°的值等于( )
【简答题】通常一个完整的数据库系统由数据库( DB )、数据库管理系统( DBMS )、数据库应用程序、用户和硬件组成。用户与数据库应用程序交互,数据库应用程序与( )交互, DBMS 访问( )中的数据。
【单选题】如图,直线l 1 、l 2 、l 3 的斜率分别为k 1 、k 2 、k 3 ,则必有( )
【单选题】How much did the triplet boys weigh when they were born?
A.
They were about 2.5 pounds.
B.
They were about 3.2 pounds.
C.
They were about 3 pounds.
D.
They were about 3.5 pounds.
【单选题】A:How much () they? B:Two yuan twenty fen.
【简答题】一个完整的数据库系统由( )、( )、数据库应用程序、用户和硬件组成。
【简答题】How much were the letters worth on the market, and how much was the final deal?
【单选题】若cos110°=k,则tan(-80°)=( )
【简答题】一个完整的数据库系统由( )、( )、数据库应用程序、用户和硬件组成。数据库由( )统一管理,任何数据访问都是通过( )来完成的。