Since Tom accidentally __________ a virus into his computer, he cannot open the file now. A: uploaded B: downloaded C: loaded up D: loaded down

判断文件是否上传文件应该用 A: A、is_uploaded_file($_FILES['upimage']['name']) B: B、is_uploaded_file($_FILES['upimage']['type']) C: C、is_uploaded_file($_FILES['upimage']['tmp_name']) D: D、is_uploaded_file($_FILES['upimage']['size'])

The picture taken and uploaded by your parents might reveal your privacy in the future.

如何定义一个文件读写变量？ A: FILE *file； B: FILE file； C: FILE &file； D: file *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");

使用函数()来检查此文件是否是上传文件。 A: uploaded_file() B: move_uploaded_file() C: move_file() D: is_uploaded_file()

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

创建文件file的命令是()。 A: mv file B: mkdir file C: rm file D: cp file

3.1 下面是创建File对象的语句,错误的是( ) A: File f=new File("d:\\text.txt"); B: File f=new File("d: "); C: File f=new File("d:","text.txt"); D: File f=new File("d:\text.txt");