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" };
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" };
举一反三
- 下列定义字符串数组的语法正确的是（ ）？ A: String[] list = new String[]{"red", "yellow", "green"}; B: String list = new String{"red", "yellow", "green"}; C: String list = {"red", "yellow", "green"}; D: String[] list = {"red", "yellow", "green"};
- 下列值不为true的表达式有（ ）。 A: "john" = = "john" B: "john".equals("john") C: "john" = "john" D: "john".equals(new String("john"))
- 根据用户在文本框txtName中输入的姓名对Student表进行查询，以下SQL语句定义正确的是__________________。 A: String sql="Select * from Student where Sname="+txtName.getText(); B: String sql="Select * from Student where Sname='"+txtName.getText()+"'"; C: String sql="Select * from Student where Sname like "+txtName.getText(); D: String sql="Select * from Student where Sname like '"+txtName.getText()+"'";
- 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"
- 定义名为“学号”的属性，该属性的类型为“string”，该属性在XML中必须出现，下面正确的选项是（ ）。 A: <!attribute name="学号" type="string" use="required" /> B: <attribute name="学号" type="string" use="prohibited" /> C: <attribute name="学号" type="string" use="required" /> D: <attribute name="学号" type="string" use="optional" />