帮助确定默认情况下在操作系统中安装了哪个版本的Windows Installer？
帮助请填写下表：
Windows XP Windows Installer 2.0
Windows XP (SP1) Windows Installer 3.0
Windows XP (SP2) Windows Installer 3.0
Windows XP (SP3) Windows Installer 3.1
Windows XP RTM Windows Installer 3.0
Windows XP 64-bit Edition **???**
Windows Server 2003 Windows Installer 2.0
Windows Server 2003(SP1) Windows Installer 3.1
Windows Server 2003(SP2) **???**
Windows Server 2003 RTM Windows Installer 3.0
Windows Server 2003 R2 (x64)(x86) **???**
Windows Server 2003 R2(SP1)(x64)(x86) **???**
Windows Server 2003 R2(SP2)(x64)(x86) **???**
Windows Vista **???**
Windows Vista (SP1) Windows Installer 4.0
Windows Vista (SP2) Windows Installer 4.5
Windows Server 2008 **???**
Windows Server 2008 (SP1) Windows Installer 4.0
Windows Server 2008 (SP2) Windows Installer 4.5
Windows Server 2008 R2 Windows Installer 5.0
Windows Server 2008 R2(SP1) Windows Installer 5.0
Windows 7 Windows Installer 5.0
Windows 7 (SP1) Windows Installer 5.0
Windows 8 Windows Installer 5.0
Windows Server 2012 Windows Installer 5.0