A.very quickly
B.far quickly
C.much quickly
D.much more quickly
第1题:
A、mustn't have gone
B、mustn't go
C、can't have gone
D、can't go
第2题:
classWorkimplementsRunnable{Threadother;Work(Threadother){this.other=other;}publicvoidrun(){try{other.join();}catch(Exceptione){}System.out.print("afterjoin");}}classLaunch{publicstaticvoidmain(String[]args){newThread(newWork(Thread.currentThread())).start();System.out.print("afterstart");}}结果为:()
A.afterjoin
B.afterstart
C.afterjoinafterstart
D.afterstartafterjoin
第3题:
设有关系模式:student(sno, sname, age, dept),现利用命令: CREATE VIEW stu AS SELECT *FROM student WHERE dept="cs"WITH CHECK OPTION 创建了一个视图。则以下SQl命令中能正确执行的是
A.UPDATE stu SET dept="maths"
B.UPDATE stu SET dept="maths"WHERE age>=20
C.INSERT INTO stu VALUES ("2004001", "John", 30, "cs")
D.INSERT INTO stu VALUES ("2004001", "John", 50, "maths")
第4题:
2、2.已知字典a={‘English’:67,’Maths’:70,’Basketball’:76},则执行指令“a.get(‘Maths’,False)”的返回结果为________;执行指令“a.items()”的返回结果为___;执行指令“a.pop(‘Maths’)”的返回结果为_______。
第5题:
设有关系模式:student(sno,same,age,dept),现利用命令:CREATE VIEWStu ASSELECT*FROMStudent WHERE dept=“cs”WITHCHECK OPTION创建一个视图。则以下SQL命令中能正确执行的是
A. UPDATEStuSET dept=“maths”
B.UPDATEStuSET dept=“maths”WHEREage>=20
C.INSERT INTOStu VALUES(“2004001”,“John”,30,“cs”)
D.INSERT INTOStu VALUES(“2004001”,“John”,50,“maths”)
第6题:
A. figure…out
B. try…out
C. carry … out
D. work… out
第7题:
设有关系模式:student (sno,sname,age,dept),现利用命令: CREATE VIEW stu AS SELECT*FROM student WHERE dept="cs"WITH CHECK OPTION 创建了一个视图。则以下SQL命令中能正确执行的是( )。
A.UPDATE stu SET dept="maths"
B.UPDATE stu SET dept="maths" WHERE age>=20
C.INSERT INTO stu VALUES("2004001","John",30,"cs")
D.INSERT INTO stu VALUES("2004001","John",50,"maths")
第8题:
查询选修了课程号为“MATHS”的学生的姓名和年龄,若用下列SQL的SELECT语句表达时,错误的是( )。
A) SELECT SNAME,AGE FROM S WHERE S. S# =(SELECT SC. S# FROM SC WHERE
c.c# ='MATHS ')
B ) SELECT SNAME, AGE FROM S WHERE S. S# =(SELECT SC. S# FROM SC WHERE
SC. C# =' MATHS ')
C) SELECT SNAME, AGE FROM S, SC WHERE S. S# =SC. S# AND SC. C# ='MATHS'
ORDER BY S. S#
D)SELECT SNAME, AGE FROM S, SC WHERE S. S# =SC. S# AND SC. C# ='MATHS'
第9题:
设有关系模式:student(sno,sname,age,dept),现利用命令: CREATE VIEW stu AS SELECT * FROM student WHERE dept="cs"WITH CHECK OPTION创建了一个视图。则以下SQL命令中能正确执行的是( )。
A.UPDATE stu SET dept="maths"
B.UPDATE stu SET dept="maths"WHERE age>=20
C.INSERT INTO stu VALUES("2004001","John",30,"CS")
D.INSERT INTO stu VALUES("200400l","John",50,"maths")
第10题:
1、定义完结构体Student之后,下面哪一种是正确的传参方式? struct Student{ char name[20]; int age; }
A.student = Student("Lily",18);
B.struct Student student = {"Lily",18};
C.student = Student{"Lily",18};
D.struct Student student = ("Lily",18);