获取input节点的正确方法是() A: document.querySelectorAll('file')[0] B: document.getElementById('file')[0] C: document.getElementByTagName('file')[0] D: document.getElementsByName('file')[0]
获取input节点的正确方法是() A: document.querySelectorAll('file')[0] B: document.getElementById('file')[0] C: document.getElementByTagName('file')[0] D: document.getElementsByName('file')[0]
如当前目录中没有file文件,touch file命令建立长度为0的文件file。
如当前目录中没有file文件,touch file命令建立长度为0的文件file。
下列哪个选项不能将标准输出重定向到file文件中? A: cat /etc/passwd 1>file B: cat /etc/passwd >file C: cat /etc/passwd 0>file D: cat /etc/passwd >>file
下列哪个选项不能将标准输出重定向到file文件中? A: cat /etc/passwd 1>file B: cat /etc/passwd >file C: cat /etc/passwd 0>file D: cat /etc/passwd >>file
file:///C:UsersdellAppDataRoamingTencentUsers147907282TIMWinTempRichOleUYD7GLH)_REQD$NVT$(0%ON.png1016a87a3164ba377dbb9d2bc4dbaea9.pngfile:///C:UsersdellAppDataRoamingTencentUsers147907282TIMWinTempRichOleUYD7GLH)_REQD$NVT$(0%ON.png1016a87a3164ba377dbb9d2bc4dbaea9.png
file:///C:UsersdellAppDataRoamingTencentUsers147907282TIMWinTempRichOleUYD7GLH)_REQD$NVT$(0%ON.png1016a87a3164ba377dbb9d2bc4dbaea9.pngfile:///C:UsersdellAppDataRoamingTencentUsers147907282TIMWinTempRichOleUYD7GLH)_REQD$NVT$(0%ON.png1016a87a3164ba377dbb9d2bc4dbaea9.png
陆续退出 未知类型:{'label': 'questionDesc', 'content': '请为以下词组选择适合的英文表达。', 'isMemberControl': 0, 'type': 181} A: file in B: on file C: file out
陆续退出 未知类型:{'label': 'questionDesc', 'content': '请为以下词组选择适合的英文表达。', 'isMemberControl': 0, 'type': 181} A: file in B: on file C: file out
如何定义一个文件读写变量? A: FILE *file; B: FILE file; C: FILE &file; D: file *file;
如何定义一个文件读写变量? A: FILE *file; B: FILE file; C: FILE &file; D: file *file;
下面程序的运算结果是( )。 #include<iostream> using namespace std; class A { public: virtual void fun()=0; }; class B:public A } public: void fun() {cout<<"new file"<<" ";} }; class C:public A { public: void fun() { cout<<"open file"<<" ";} }; void main() { A a, * p; B b;C c; p=&c; p->fun(); p=&b; } A: new file open file B: new file new file C: 编译出错 D: open file new file
下面程序的运算结果是( )。 #include<iostream> using namespace std; class A { public: virtual void fun()=0; }; class B:public A } public: void fun() {cout<<"new file"<<" ";} }; class C:public A { public: void fun() { cout<<"open file"<<" ";} }; void main() { A a, * p; B b;C c; p=&c; p->fun(); p=&b; } A: new file open file B: new file new file C: 编译出错 D: open file new file
创建一个d盘aa文件夹下news.txt文件对象,以下正确的是 A: File file = new File("d:/aa"); B: File file = new File("d:/aa/news.txt"); C: File file = new File("d:/news.txt"); D: File file = new File("d:\aa\news.txt");
创建一个d盘aa文件夹下news.txt文件对象,以下正确的是 A: File file = new File("d:/aa"); B: File file = new File("d:/aa/news.txt"); C: File file = new File("d:/news.txt"); D: File file = new File("d:\aa\news.txt");
下列__________说法是正确的?I:File file = new File("input.txt");try (Scanner input = new Scanner(file)) { String line = input.nextLine();}II:try (File file = new File("input.txt"); Scanner input = new Scanner(file);) { String line = input.nextLine();}III:File file;try (file = new File("input.txt"); Scanner input = new Scanner(file);) { String line = input.nextLine();}IV:File file;Scanner input;try (file = new File("input.txt"); input = new Scanner(file);) { String line = input.nextLine();} A: I B: II C: III D: IV
下列__________说法是正确的?I:File file = new File("input.txt");try (Scanner input = new Scanner(file)) { String line = input.nextLine();}II:try (File file = new File("input.txt"); Scanner input = new Scanner(file);) { String line = input.nextLine();}III:File file;try (file = new File("input.txt"); Scanner input = new Scanner(file);) { String line = input.nextLine();}IV:File file;Scanner input;try (file = new File("input.txt"); input = new Scanner(file);) { String line = input.nextLine();} A: I B: II C: III D: IV
使用File file=new File("c:myletter
使用File file=new File("c:myletter