以长格式列出当前用户家目录下文件名以file开头,跟着2到5之间的一个数字的所有文件(提示,结合ls 命令) A: ls -l ~/file[2-5]* B: find ~ -name "file[2-5]*" C: find ~ -name "file[2-5]*" -exec ls -l {} ; D: ls -a ~/file[2-5]* E: ls -l ~/file[2-5] F: find ~ -name "file[2-5]?"
以长格式列出当前用户家目录下文件名以file开头,跟着2到5之间的一个数字的所有文件(提示,结合ls 命令) A: ls -l ~/file[2-5]* B: find ~ -name "file[2-5]*" C: find ~ -name "file[2-5]*" -exec ls -l {} ; D: ls -a ~/file[2-5]* E: ls -l ~/file[2-5] F: find ~ -name "file[2-5]?"
下面()中,数组str保存的不是字符串。 A: char str[5]={'H','e','l','l','o'}; B: char str[6] = {"China"}; C: char str[6] = "China"; D: char str[ ] = "China";
下面()中,数组str保存的不是字符串。 A: char str[5]={'H','e','l','l','o'}; B: char str[6] = {"China"}; C: char str[6] = "China"; D: char str[ ] = "China";
下面各语句行中,能正确进行字符串赋值操作的语句是: A: char *s;scanf("%s",s); B: char st[4][5]={"HELLO"}; C: char s[5]={'H', 'E', 'L', 'L', 'O'}; D: char * s;s="HELLO";
下面各语句行中,能正确进行字符串赋值操作的语句是: A: char *s;scanf("%s",s); B: char st[4][5]={"HELLO"}; C: char s[5]={'H', 'E', 'L', 'L', 'O'}; D: char * s;s="HELLO";
给定变量 A=3 以下代码能正确输出 305 的是 A: echo $((100 * A + 5)) B: echo $((100 * $A + 5)) C: echo "100*$A+5" | bc -l D: echo "100*A+5" | bc -l
给定变量 A=3 以下代码能正确输出 305 的是 A: echo $((100 * A + 5)) B: echo $((100 * $A + 5)) C: echo "100*$A+5" | bc -l D: echo "100*A+5" | bc -l
需要规定当前网页中链接文字的色彩为蓝色,正在被点击的链接文字的色彩为红色,点击过的链接文字的色彩为灰色,则正确的选项为( )。 A: <body link="blue" alink="red" vlink="gray"> B: <body link="rgb(0,0,255)" alink="rgb(255,0,0)" vlink="rgb(128,128,128)"> C: <body link=" D: 0000FF" alink=" E: FF0000" vlink=" F: 808080"> G: <body link="rgb(0,0, H: FF)" alink="rgb( I: FF,0,0)" vlink="rgb( J: 80, K: 80, L: 80)">
需要规定当前网页中链接文字的色彩为蓝色,正在被点击的链接文字的色彩为红色,点击过的链接文字的色彩为灰色,则正确的选项为( )。 A: <body link="blue" alink="red" vlink="gray"> B: <body link="rgb(0,0,255)" alink="rgb(255,0,0)" vlink="rgb(128,128,128)"> C: <body link=" D: 0000FF" alink=" E: FF0000" vlink=" F: 808080"> G: <body link="rgb(0,0, H: FF)" alink="rgb( I: FF,0,0)" vlink="rgb( J: 80, K: 80, L: 80)">
在谓词公式("x)(F(x)ÞG(y))Þ($y)(H(x)∧L(x, y, z))中,("x)的辖域是( ) A: (F(x)ÞG(y)) B: F(x) C: (F(x)ÞG(y))Þ($y)(H(x)∧L(x, y, z)) D: ("x)(F(x)
在谓词公式("x)(F(x)ÞG(y))Þ($y)(H(x)∧L(x, y, z))中,("x)的辖域是( ) A: (F(x)ÞG(y)) B: F(x) C: (F(x)ÞG(y))Þ($y)(H(x)∧L(x, y, z)) D: ("x)(F(x)
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"
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"])
以下哪个选项是正确的json数据格式: 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"}
以下哪个选项是正确的json数据格式: 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"}