某OUT单板的最大色散容限为800ps/nm,那么在G.652光纤上,色散受限距离可 发布时间:2018-05-24 08:05 │ 来源:www.tikuol.com 题型:单项选择题 问题: 某OUT单板的最大色散容限为800ps/nm,那么在G.652光纤上,色散受限距离可粗略考虑为()A.40KMB.60KMC.80KMD.100KM
题型:单项选择题 .My brother wants to work in the factory which ______ still ______.A.is/ buildingB.has /been builtC.is /being builtD.is /to be built 查看答案