QEMU 使用手册（英文）获取方法：手册内容：
获取方法：man qemu|multimarkdown>qemu-manual.html手册内容：QEMU(1) QEMU QEMU(1)NAME qemu - QEMU User DocumentationSYNOPSIS qemu-system-x86_64 [options] [disk_image]DESCRIPTION The QEMU PC System emulator simulates the following peripherals:• i440FX host
