• 2021-04-14 问题

    已知 a = [1, 2, 3] 和 b = [1, 2, 4] ,那么 id(a[1])==id(b[1]) 的执行结果为 ___________ 。

    已知 a = [1, 2, 3] 和 b = [1, 2, 4] ,那么 id(a[1])==id(b[1]) 的执行结果为 ___________ 。

  • 2022-06-10 问题

    执行语句“a,b=1,1”后,以下结论正确的是( )。 A: id(a)、id(b)、id(1)各不相等 B: id(a)=id(b),但不同于id(1) C: id(a)=id(1),但不同于id(b) D: id(a)、id(b)、id(1)均相等

    执行语句“a,b=1,1”后,以下结论正确的是( )。 A: id(a)、id(b)、id(1)各不相等 B: id(a)=id(b),但不同于id(1) C: id(a)=id(1),但不同于id(b) D: id(a)、id(b)、id(1)均相等

  • 2022-06-06 问题

    删除student表中id为1的记录() A: TRUNCATE FROM student where id=1; B: DELETE student where id=1; C: DELETE FROM student where id=1; D: DELETE INTO student where id=1;

    删除student表中id为1的记录() A: TRUNCATE FROM student where id=1; B: DELETE student where id=1; C: DELETE FROM student where id=1; D: DELETE INTO student where id=1;

  • 2022-06-18 问题

    1>0>-1,ID:6297976,修改未发布的作业 A: 1 B: 2 C: 3 D: 4

    1>0>-1,ID:6297976,修改未发布的作业 A: 1 B: 2 C: 3 D: 4

  • 2022-06-15 问题

    删除student表中id为1的记录,下列语句正确的是 A: DELETE student WHERE id=1; B: DELETE FROM student WHERE id=1; C: DELETE FROM student WHERE id:=1; D: DELETE student WHERE id:=1;

    删除student表中id为1的记录,下列语句正确的是 A: DELETE student WHERE id=1; B: DELETE FROM student WHERE id=1; C: DELETE FROM student WHERE id:=1; D: DELETE student WHERE id:=1;

  • 2022-07-02 问题

    写出条件查询“表1 里的字段1的id是多少”() A: select * from 表1 where字段1=“值” B: select id from 表1 where字段1=“值” C: select id from 字段1 where表1=“值” D: select id from 表1

    写出条件查询“表1 里的字段1的id是多少”() A: select * from 表1 where字段1=“值” B: select id from 表1 where字段1=“值” C: select id from 字段1 where表1=“值” D: select id from 表1

  • 2022-06-17 问题

    Use the following code to answer the following questions: int id = 0; cout &#91;< "ID: "; cin &#93;> id; if (id == 1) cout << "Janet"; else if (id == 2 || id == 3) cout << "Mark"; else if (id == 4) cout << "Jerry"; else cout << "Sue"; (1) The above code display ____when the id variable contains the number 2? (2) The above code display ____when the id variable contains the number 4? (3) The above code display ____when the id variable contains the number 3? (4) The above code display ____when the id variable contains the number 8

    Use the following code to answer the following questions: int id = 0; cout &#91;< "ID: "; cin &#93;> id; if (id == 1) cout << "Janet"; else if (id == 2 || id == 3) cout << "Mark"; else if (id == 4) cout << "Jerry"; else cout << "Sue"; (1) The above code display ____when the id variable contains the number 2? (2) The above code display ____when the id variable contains the number 4? (3) The above code display ____when the id variable contains the number 3? (4) The above code display ____when the id variable contains the number 8

  • 2022-06-10 问题

    重强度维生素B6(VB6)()毫克(mg)。 A: 1 B: 2 C: 3 D: 4

    重强度维生素B6(VB6)()毫克(mg)。 A: 1 B: 2 C: 3 D: 4

  • 2022-06-19 问题

    炉水低磷酸盐处理时,磷酸根质量浓度标准为mg/L() A: 0.5~3.0 B: 1~4 C: 2~4 D: 1~2

    炉水低磷酸盐处理时,磷酸根质量浓度标准为mg/L() A: 0.5~3.0 B: 1~4 C: 2~4 D: 1~2

  • 2022-06-17 问题

    下列关于匿名类正确的是()。 A: Listlist=new{Id=1,Name="张三"}; B: varstu=newStudent{Id=1,Name="张三"}; C: varstu=new{Id=1,Name="张三"}; D: publicclassvar{}varstu=new{Id=1,Name="张三"};

    下列关于匿名类正确的是()。 A: Listlist=new{Id=1,Name="张三"}; B: varstu=newStudent{Id=1,Name="张三"}; C: varstu=new{Id=1,Name="张三"}; D: publicclassvar{}varstu=new{Id=1,Name="张三"};

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