请教一个yum的一个问题！

killer5757

请教一下在yum.conf里添加一个源配置比如：

[main]
cachedir=/var/cache/yum
keepcache=0
debuglevel=2
logfile=/var/log/yum.log
exactarch=1
obsoletes=1
gpgcheck=1
plugins=1
metadata_expire=1800

# PUT YOUR REPOS HERE OR IN separate files named file.repo
# in /etc/yum.repos.d

[sjtu]
name=Fedora Core $releasever - $basearch - Base
#baseurl=ftp://ftp.sjtu.edu.cn/fedora/linux/core/$releasever/$basearch/os
baseurl=ftp://ftp.sjtu.edu.cn/fedora/linux/releases/7/Everything/$basearch/os
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora file:///etc/pki/rpm-gpg/RPM-GPG-KEY
gpgcheck=1

可不可以不把[sjtu]这段添加到yum.conf中，而另存为一个文件situ.repo放到yum.repo.d中？