Q I'm getting a Grub 1.5 Error 21 after installing Ubuntu on an external hard drive.
我在一台外接硬盘上安装了Ubuntu之后发生了Grub 1.5的21号错误。
2
Q: it's understood that a Chinese ship was attacked by pirates at the Aden Gulf yesterday, but managed to come out safe with external assistance. Please confirm and tell us more about it.
问：据悉，一艘中国船只昨天在亚丁湾遭到海盗袭击，在有关方面帮助下成功脱险，请证实并介绍有关情况。
3
Q factor of an open resonator is determined by the diffraction loss, reflection loss and external loss introduced by coupling as a whole.