以下对枚举类型名的定义中正确的是: A: enum a{sum=9,mon=-1,tue}; B: enum a={sum,mon,tue}; C: enum a={"sum","mon","tue"}; D: enum a{"sum","mon","tue" }
以下对枚举类型名的定义中正确的是: A: enum a{sum=9,mon=-1,tue}; B: enum a={sum,mon,tue}; C: enum a={"sum","mon","tue"}; D: enum a{"sum","mon","tue" }
输入"=SU"用向下方向键下移到“SUM”,再按( )键即可选中“SUM"函数。 A: Alt B: Ctrl C: Enter D: Tab
输入"=SU"用向下方向键下移到“SUM”,再按( )键即可选中“SUM"函数。 A: Alt B: Ctrl C: Enter D: Tab
以下函数的正确调用语句是( )。int fun(int n){ int sum=0; while(n>0) { sum=sum+n; n--; } return sum;} A: printf("%d",fun(5)); B: printf("%d",fun(int 5)); C: printf("fun(5)"); D: printf("%d",int fun(int 5));
以下函数的正确调用语句是( )。int fun(int n){ int sum=0; while(n>0) { sum=sum+n; n--; } return sum;} A: printf("%d",fun(5)); B: printf("%d",fun(int 5)); C: printf("fun(5)"); D: printf("%d",int fun(int 5));
假如成绩表有三个字段(学号char(8),课程号char(4),成绩Int),查询某一分数线以下的学生人数,该分数线通过文本框TextBox1输入,则正确的SQL语句是( )。 A: sqlstr = "Select Sum(成绩) As 学生人数 From 成绩表 Where 成绩 <= " & Val(TextBox1.Text) B: sqlstr = "Select Count(*) As 学生人数 From 成绩表 Where 成绩 <= Val(TextBox1.Text)" C: sqlstr = "Select Count(*) As 学生人数 From 成绩表 Where 成绩 <= " & Val(TextBox1.Text) D: sqlstr = "Select Sum(成绩) As 学生人数 From 成绩表 Where 成绩 <= TextBox1.Text"
假如成绩表有三个字段(学号char(8),课程号char(4),成绩Int),查询某一分数线以下的学生人数,该分数线通过文本框TextBox1输入,则正确的SQL语句是( )。 A: sqlstr = "Select Sum(成绩) As 学生人数 From 成绩表 Where 成绩 <= " & Val(TextBox1.Text) B: sqlstr = "Select Count(*) As 学生人数 From 成绩表 Where 成绩 <= Val(TextBox1.Text)" C: sqlstr = "Select Count(*) As 学生人数 From 成绩表 Where 成绩 <= " & Val(TextBox1.Text) D: sqlstr = "Select Sum(成绩) As 学生人数 From 成绩表 Where 成绩 <= TextBox1.Text"
假如成绩表有三个字段(学号String,课程号String,成绩Integer),查询某一分数线以下的学生人数,该分数线通过文本框TextBox1输入,则正确的SQL语句是____________。 A: sqlstr = "Select Sum(成绩) As 学生人数 From 成绩表 Where 成绩 <= TextBox1.Text" B: sqlstr = "Select Count(*) As 学生人数 From 成绩表 Where 成绩 <= Val(TextBox1.Text)" C: sqlstr = "Select Sum(成绩) As 学生人数 From 成绩表 Where 成绩 <= " & Val(TextBox1.Text) D: sqlstr = "Select Count(*) As 学生人数 From 成绩表 Where 成绩 <= " & Val(TextBox1.Text)
假如成绩表有三个字段(学号String,课程号String,成绩Integer),查询某一分数线以下的学生人数,该分数线通过文本框TextBox1输入,则正确的SQL语句是____________。 A: sqlstr = "Select Sum(成绩) As 学生人数 From 成绩表 Where 成绩 <= TextBox1.Text" B: sqlstr = "Select Count(*) As 学生人数 From 成绩表 Where 成绩 <= Val(TextBox1.Text)" C: sqlstr = "Select Sum(成绩) As 学生人数 From 成绩表 Where 成绩 <= " & Val(TextBox1.Text) D: sqlstr = "Select Count(*) As 学生人数 From 成绩表 Where 成绩 <= " & Val(TextBox1.Text)
假如成绩表有三个字段(学号String,课程号String,成绩Integer),查询某一分数线以下的学生人数,该分数线通过文本框TextBox1输入,则正确的SQL语句是____________。 A: sqlstr = "Select Sum(成绩) As 学生人数 From 成绩表 Where 成绩 <= TextBox1.Text" B: sqlstr = "Select Count(*) As 学生人数 From 成绩表 Where 成绩 <= Val(TextBox1.Text)" C: sqlstr = "Select Sum(成绩) As 学生人数 From 成绩表 Where 成绩 <= " & Val(TextBox1.Text) D: sqlstr = "Select Count(*) As 学生人数 From 成绩表 Where 成绩 <= " & Val(TextBox1.Text)
假如成绩表有三个字段(学号String,课程号String,成绩Integer),查询某一分数线以下的学生人数,该分数线通过文本框TextBox1输入,则正确的SQL语句是____________。 A: sqlstr = "Select Sum(成绩) As 学生人数 From 成绩表 Where 成绩 <= TextBox1.Text" B: sqlstr = "Select Count(*) As 学生人数 From 成绩表 Where 成绩 <= Val(TextBox1.Text)" C: sqlstr = "Select Sum(成绩) As 学生人数 From 成绩表 Where 成绩 <= " & Val(TextBox1.Text) D: sqlstr = "Select Count(*) As 学生人数 From 成绩表 Where 成绩 <= " & Val(TextBox1.Text)
Word中插入数学公式的方法是()。 A: "插入"→"形状"→"公式" B: "开发工具"→"公式" C: "插入"→"公式"→"插入新公式" D: "引用"→"插入"→"公式"
Word中插入数学公式的方法是()。 A: "插入"→"形状"→"公式" B: "开发工具"→"公式" C: "插入"→"公式"→"插入新公式" D: "引用"→"插入"→"公式"
在Excel 中,单元格A1的内容为10,单元格B1的内容为8,现求A1、B1的和,应表示为( ) A: =A1+B1 B: "A1+B1" C: "=A1+B1" D: =SUM(A1:B1)
在Excel 中,单元格A1的内容为10,单元格B1的内容为8,现求A1、B1的和,应表示为( ) A: =A1+B1 B: "A1+B1" C: "=A1+B1" D: =SUM(A1:B1)
定义并初始化一个用于存放我们国家的四个直辖市的数组cityName,四个直辖市为:北京,上海,天津,重庆. 正确的是_________ A: String[] cityName=new String[4]{"北京","上海","天津","重庆"}; B: String[] cityName=new String[]{"北京","上海","天津","重庆"}; C: String[] cityName={"北京","上海","天津","重庆"}; D: String cityName = new String[4] { "北京", "上海", "天津", "重庆" };
定义并初始化一个用于存放我们国家的四个直辖市的数组cityName,四个直辖市为:北京,上海,天津,重庆. 正确的是_________ A: String[] cityName=new String[4]{"北京","上海","天津","重庆"}; B: String[] cityName=new String[]{"北京","上海","天津","重庆"}; C: String[] cityName={"北京","上海","天津","重庆"}; D: String cityName = new String[4] { "北京", "上海", "天津", "重庆" };
已知有一个名为names的空列表,如何向其中添加old_driver,rain,jack,shanshan,peiqi,black_girl 元素? A: names.append("old_driver","rain","jack","shanshan","peiqi","black_girl") B: names.extend("old_driver","rain","jack","shanshan","peiqi","black_girl") C: names.insert("old_driver","rain","jack","shanshan","peiqi","black_girl") D: names.extend(["old_driver","rain","jack","shanshan","peiqi","black_girl"])
已知有一个名为names的空列表,如何向其中添加old_driver,rain,jack,shanshan,peiqi,black_girl 元素? A: names.append("old_driver","rain","jack","shanshan","peiqi","black_girl") B: names.extend("old_driver","rain","jack","shanshan","peiqi","black_girl") C: names.insert("old_driver","rain","jack","shanshan","peiqi","black_girl") D: names.extend(["old_driver","rain","jack","shanshan","peiqi","black_girl"])