搜索命令computer adventure games，翻译过来是（）。

A:computer（AND）adventure（AND）games B:computer（OR）adventure（OR）games C:computer（AND）game（NOT）adventure

搜索命令+computer+game–adventure，翻译过来是（）。

A:computer（AND）adventure（AND）games B:computer（OR）adventure（OR）games C:computer（AND）game（NOT）adventure

According to the passage, which of the following description about the computer clubs is NOT TRUE______

A:The computer clubs are open to the people with some computer knowledge already B:The computer experts in the clubs have to explain everything in easily understood C:The expert computer group is easily formed in the clubs D:The grockles would rather go to computer towns than go to clubs

About the computer towns and the computer clubs, David Tebutte thinks that______

A:it is just to take trouble to see the two working side by side B:the computer towns are more important than the computer clubs C:they can complement each other but there is great difference between D:the computer clubs are as important as the computer towns

Since RAM is only active when the computer is on, your computer uses disk to store information even when the computer is off. Which of the following is true ______

A:When your computer is on, only RAM is used to store information B:When your computer is on, only disk drives are used to store information C:When your computer is oft, only RAM is used to store information D:When your computer is off, only disk drives are used to store information

Since RAM is only active when the computer is on, your computer uses disk to store information even when the computer is off. Which of the following is true （ ）

A:When your computer is on, only RAM is used to store information. B:When your computer is on, only disk drives are used to store information. C:When your computer is off, only RAM is used to store information. D:When your computer is off, only disk drives are used to store information.

与“SELECT DISTINCT歌手号FROM歌手WHERE最后得分＞=ALL；(SELECT最后得分FROM歌手WHERE SUBSTR(歌手号，1，1)="2")”等价的SQL语句是______。

A:SELECT DISTINCT歌手号FROM歌手WHERE最后得分＞=(SELECT MAX(最后得分)FROM歌手WHERE SUBSTR(歌手号，1，1)="2") B:SELECT DISTINCT歌手号FROM歌手WHERE最后得分＞=(SELECT MIN(最后得分)FROM歌手WHERE SUBSTR(歌手号，1，1)="2") C:SELECT DISTINCT歌手号FROM歌手WHERE最后得分＞=ANY(SELECT最后得分FROM歌手WHERE SUBSTR(歌手号，1，1)="2") D:SELECT DISTINCT歌手号FROM歌手WHERE最后得分＞=SOME(SELECT最后得分FROM歌手WHERE SUBSTR(歌手号，1，1)="2")

There are two character strings：s and t.s="My favor is computer"，t=substr(s，9，5)．Then the result after operation is( )。

A:S="My favor is computer"；　　t="compu"； B:S="My favor is computer"；　　t="is co"； C:S="My favor"；　　　　　　　　 t="is co"； D:S="My favor"；　　　　　　　　 t="is computer"；

There are two character strings：s and t.s="My favor is computer"，t=substr(s，9，5)．Then the result after operation is

A:S="My favor is computer"；　　t="compu"； B:S="My favor is computer"；　　t="is co"； C:S="My favor"；　　　　　　　　 t="is co"； D:S="My favor"；　　　　　　　　 t="is computer"；