创建一个组名字为tech并且组id为300的命令是() A: addgroup<br/>300 tech B: groupadd -g 300 tech C: newgrp<br/>-g 300 tech D: groups -gid 300 –name tech

What is the purpose of the passage（） A: To tell how "high tech" and "state of the art" have developed. B: To give examples of "high tech". C: To tell what "high tech" and "state of the art" are. D: To describe very modem technology.

5.Georgia Tech students are created by Hobbit.( )

People around the world ________ the cam...nia Tech University.

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");

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

选择出学术风格较好的句式。 A: Anxiety about the tech giants on the part of startups and their investors goes much deeper than such events. B: Startups and their investors have much deeper anxiety about the tech giants than such events. C: Startups and their investors are much deeper anxious about the tech giants than such events.

使用File file=new File("c:myletter

People around the world ________ the campus shooting that happened in Virginia Tech University.