style="padding-left:0px;">class Student: name="xxx" @staticmethod def show(): name="yyy" print(name,Student.name) @staticmethod def display(): show() s=Student() s.display() 结果：

下面程序的运行结果是( )。class Student:name="yyy"age=30def __init__(self):self.name="xxx"self.age=20s=Student()Student.name="zzz"print(s.name,s.age,Student.name,Student.age) A: yyy 20 zzz 30 B: xxx 20 zzz 30 C: yyy 20 xxx 30 D: xxx 20 yyy 30

Student类中存在String类型name属性,下列Student类的构造方法中,哪个是正确的？ A: Student(String name){} B: Student(String name) C: Student(name)() D: NewStudent (String name){}

以下代码中，实例方法定义正确的是（） A: class Student: def setName(self,name): self.name=name B: class Student: def setName(name): self.name=name C: class Student: def setName(self): self.name=name D: class Student: def setName(name,self): self.name=name

表student中的包含两个字段，整型的id，字符串型的name。只显示表student中name列记录的SQL语句正确的是（） A: select name from student B: select * from student C: select from name in student D: select name

下面哪一个是JSON数据？（） A: ｛name："xiaoming"，age，"student"｝ B: ｛"name"："xiaoming"，"age"："student"｝ C: ｛"xiaoming"，"student"｝ D: ["xiaoming"，"student"]

若想查询student表中name为空值的记录，则正确的SQL语句是（ ）。 A: SELECT * FROM student WHERE name = NULL; B: SELECT * FROM student WHERE name like NULL; C: SELECT * FROM student WHERE name = 'NULL'; D: SELECT * FROM student WHERE name is NULL;

若想查询student表中name为空值的记录，则正确的SQL语句是（1.0分） A: select * from student where name = null; B: select * from student where name link null; C: select * from student where name = 'null'; D: select * from student where name is null;

以下变量定义，错误的是： A: struct student{int num, char name[20];} s; B: struct {int num, char name[20];} s; C: struct student{int num, char name[20];}; struct student s; D: struct student{int num, char name[20];} ; student s

下列声明结构体变量错误的是（ ） A: A．struct student 　{　int no; char name[16]; ｝st1,st2; B: B． struct student｛ int no;char name[16];｝;struct student st1,st2; C: C．struct student { int no; char name[16]; }; struct st1,st2; D: D．struct student{ int no;char name[16]; };student st1,st2;