A 25-year-old student from Hubei was admitted into Tsinghua University，China's most famous universi...

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SELECT * FROM student SELECT * FROM student WHERE GETDATE（） SELECT * FROM student ORDER st_id SELECT * FROM student BY St_name

在SQLServer数据库中已有数据表student可以删除该表数据的命令是

DROP FROM student DELETE FROM student REMOVE FROM student KILL FROM student

对于学生信息表studentsnosnamesexagedept要查询所有刘姓学生的信息正确的语句是

SELECT * FROM student WHERE sname LIKE'刘 * ' SELECT * FROM student WHERE sname LIKE'刘 $' SELECT * FROM student WHERE sname LIKE'刘%' SELECT * FROM student WHERE sname LIKE'刘&'

与患者体厚有关的CT值误差应小于

5HU 15HU 20HU 25HU 30HU

与SQL语句SELECT学号姓名FROMstudentWHERE成绩BETWEEN60AND100等

SELECT学号，姓名 FROM student WHERE成绩＜=100.AND.成绩＞=60 SELECT学号，姓名 FROM student WHERE成绩＜100.AND.成绩＞60 SELECT学号，姓名 FROM student WHERE成绩＞=100.AND.成绩＜=60 SELECT学号，姓名 FROM student WHERE成绩＞100.AND.成绩＜60

25.Thestudentwhowascaught______intheexamhasbeenrem

cheat cheated cheating to cheat

轻度新生儿缺氧性脑病与正常新生儿额叶白质低密度鉴别后者脑白质CT值

>19Hu >15Hu >13Hu >23Hu >25Hu

轻度新生儿缺氧性脑病与正常新生儿额叶白质低密度鉴别后者脑白质的CT值为

>19HU >15HU >13HU >23HU >25HU

CT平扫时正常脑灰质的CT值为

20HU 25～32HU 0～10HU 30～40HU 50～70HU

从学生表中删除学号为1001的学生记录正确的SQL语句是______

DROP FROM Student WHERE 学号="1001" DROP FROM Student FOR 学号="1001" DELETE FROM Student WHERE 学号="1001" DELETE FROM Student FOR 学号="1001"

某一脑部图像的窗宽为100Hu窗位变为50Hu则显示的CT值的中心值是

0Hu 25Hu 50Hu 75Hu 100Hu

CT平扫时正常脑灰质的CT值为

20HU 25～32HU 0～10HU 30～40HU 50～70HU

与SQL语句SELECT学号姓名FROMstudentWHERE成绩BETWEEN60AND100等

SELECT 学号,姓名 FROM student WHERE 成绩＜=100.AND.成绩＞＝60 SELECT 学号,姓名 FROM student WHERE 成绩＜100.AND.成绩＞60 SELECT 学号,姓名 FROM student WHERE 成绩＞=100.AND.成绩＜=60 SELECT 学号,姓名 FROM student WHERE 成绩＞100.AND.成绩＜60

下列各题使用如下表Student.dbf学号姓名课程号成绩从学生表中删除学号为1001的学生记录正确

DROP FROM Student WHERE学号="1001" DROP FROM Student FOR学号="1001" DELETE FROM Student WHERE学号="1001" DELETE FROM Student FOR学号="1001"

玻璃体的正常CT值为

－50HU左右－25～5HU 12～30HU 35～80HU 80～120HU

玻璃体的正常CT值为

－50HU左右－25～5HU 12～30HU 35～80HU 80～120HU

为观察脑组织结构常取窗宽和窗位为

60HU、20HU 150HU、25HU 400HU、35HU 80～100HU、35HU 1000～1500HU、350HU

已知有关系STUDENT则关系运算σANE＜80STUDENT用SQL语句表示为

SELECT( * )FROM STUDENT WHERE AVE ＜ 80 SELECT( * ) FROM STUDENT HAVING AVE ＜ 80 SELECT(AVE) FROM STUDENT WHERE AVE ＜ 80 SELECT(AVE） FROM STUDENT HAVING AVE ＜ 80

已知有关系STUDENT则关系运算σANE＜80STUDENT用SQL语句表示为52

SELECT( * )FROM STUDENT WHERE AVE ＜ 80 SELECT( * ) FROM STUDENT HAVING AVE ＜ 80 SELECT(AVE) FROM STUDENT WHERE AVE ＜ 80 SELECT(AVE） FROM STUDENT HAVING AVE ＜ 80

使用SQL语句从表STUDENT中查询所有姓王的同学的信息正确的命令是______

SELECT*FROM STUDENT WHERE LEFT(姓名，2)=“王” SELECT*FROM STUDENT WHERE RIGHT(姓名，2)=“王” SELECT*FROM STUDENT WHERE TRIM(姓名，2)=“王” SELECT*FROM STUDENT WHERE STR(姓名，2)=“王”

A 25-year-old student from Hubei was admitted into Tsinghua University，China's most famous universi...

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