several修饰可数还是不可数名词

　　例句：

　　Several people came forward with information.

　　有几个人自动站出来提供了信息。

　　It's just one of several projects on the drawing board.

　　这只是正在筹划的几个项目中的`一个。

　　Installation of the new system will take several days.

　　新系统的安装需要几天时间。