A: { "id": 2, "userName": admin, "passWord": 12345, "email": admin@qq.com}
B: { id: 2, userName: "admin", passWord: "12345", email: "admin@qq.com"}
C: { "id": 2, "userName": "admin", "passWord": "12345", "email": "admin@qq.com",}
D: { "id": 2, "userName": "admin", "passWord": "12345", "email": "admin@qq.com"}
举一反三
- 下列选项中，属于JSON数据的是（ ） A: [{"name":"LiLi","city":"Beijing"}] B: ["abc",12345,false,null] C: {"abc",12345,false,null} D: {"city":"Beijing","street":"Xisanqi"}
- id选择器使用_______________进行标识，后面紧跟id名。 A: " B: " C: "&" D: "@" E: "$"
- 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"
- 把一个JSON格式数据赋给变量color：color = "色彩":[ "暖色":["红","橙","黄"], "冷色":["青","蓝"], "中性色":["紫","绿","黑","灰","白"] ]以下能够取到冷色“["青","蓝"]”的是哪一个选项？_
- 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" };
内容
- 0
邮箱输入框和文本输入框同时定义样式时，写法正确的是（ ） A: input[type="text"],[type="email"] { } B: input([type="text"],[type="email"] ){ } C: input[type="text"][type="email"] { } D: input(type="text"),(type="email") { }
- 1
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"])
- 2
密码输入框和文本输入框样式同时定义时，写法正确的是（ ） A: input[type="text"] [type="password"] { } B: input[type="text"],[type="password"] { } C: input([type="text"],[type="password"]) { } D: input(type="text"),(type="password") { }
- 3
下面语句中,正确的是( )。 A: printf("%c ","student"); B: printf("%c ","c"); C: printf("%s ",&a); D: printf("%s ","hello");
- 4
以下选项中，两个条件语句功能等价的是（）。 A: if (a＝3) printf("%d ",a);if (a==3) printf("%d ",a); B: if (a-3) printf("%d ",a);if (a!=3) printf("%d ",a); C: if (a) printf("%d ",a); if (a==0) printf("%d ",a); D: if (a-3) printf("%d ",a);if (a==3) printf("%d ",a);