【单选题】运行D:\ZG\JJ.QPR 查询文件,正确的命令是( )
【单选题】灰口铸铁(HT)、球墨铸铁(QT)、铸钢(ZG)三者铸造性能的优劣顺序HT>QT>ZG;塑性的高低顺序为()。
【单选题】要彻底删除D:\ZG\ZGDA.DBF 中男职工的记录,可以使用的命令是( )
A.
USE D:\ZG\ZGDA DELETE ALL 性别="男" PACK
B.
USE D:\ZG\ZGDA DELETE FOR 性别="男" ZAP
C.
DELETE FROM D:\ZG\ZGDA FOR 性别="男" PACK
D.
DELETE FROM D:\ZG\ZGDA WHERE 性别="男" PACK
【简答题】Do you have a mobile phone? Do you send text messages to your friends and family? Text messaging or “texting” is becoming very p__1__. But scientists have p__2__ that texting can give us problems with...
【单选题】What is the result of the 'new form. of discrimination'?
A.
It liberated the non-native English teacher and singled out the unqualified.
B.
It helped the schools to employ those who come from English speaking countries.
C.
It made it easy for the educational organization to select the English teachers.
D.
It proved that the English speakers and the non-English speakers are very similar to each other.
【简答题】查询D:\ZG\ZGDA.DBF中的姓名、职称、工资字段和D:\ZG\ZGJJ.DBF中的奖金字段的数据,正确的命令是( )A. SELECT 姓名,职称,工资,奖金 FROM D:\ZG\ZGDA,D:\ZG\ZGJJ WHERE DA.编号==JJ.编号 B. SELECT DA.姓名,DA.职称,DA.工资,JJ.奖金 FROM D:\ZG\ZGDA DA,D:\ZG\Z...
【单选题】Which of the following statement is true of native words?
A.
Native words are the core and foundation of the English vocabulary.
B.
Native words are smaller in number compared with the loan words in English.
C.
Native words express the fundamental concepts of meaning and thus are the most frequently used in English vocabulary.
【单选题】以D:\ZG\ZGDA.DBF为主表,与D:\ZG\JSCJ.DBF表按编号相同建立一对一关系,正确的命令是()
A.
USE D:\ZG\ZGDA INDEX ON 编号 TAG BH USE D:\ZG\JSCJ INDEX ON 编号 TAG BH SET RELATION TO 编号 INTO JSCJ
B.
USE D:\ZG\JSCJ INDEX ON 编号 TAG BH SELECT 0 USE D:\ZG\ZGDA SET RELATION TO BH INTO JSCJ
C.
USE D:\ZG\ZGDA INDEX ON 编号 TAG BH SELECT 0 USE D:\ZG\JSCJ SET RELATION TO 编号 INTO JSCJ
D.
USE D:\ZG\JSCJ INDEX ON 编号 TAG BH SELECT 0 USE D:\ZG\ZGDA SET RELATION TO 编号 INTO JSCJ
【简答题】Do you have a mobile phone? Do you often send text messages (短信) to your friends or family? If you keep sending text messages over and over again, there may be something wrong with your fingers. 小题1: ...