小区开通了EDGE功能,要开启的EGPRS的BPC(基本物理信道)的数量范围是() 发布时间:2018-05-19 16:26 │ 来源:www.tikuol.com 题型:单项选择题 问题: 小区开通了EDGE功能,要开启的EGPRS的BPC(基本物理信道)的数量范围是()A.32—128B.0—108C.0—64D.0—128
题型:单项选择题 我国自行研制的“神舟六号”载人飞船发射升空后,为了对飞船进行测控,西安地面测控站用雷达向飞船发射电磁波,经0.004s接收到该电磁波的回波信号,此时飞船离西安地面测控站的距离为______ km,这也说明电磁波______ (填“能”或“不能”)在真空中传播. 查看答案
题型:单项选择题 根据句意,用括号内所给单词的适当形式填空。1. The little boy is too young to get _______ (dress).2. The soldiers were _______ (exhaust) after a month's fight.3. Their ideas all sound so _______ (convince).4. Girls like reading stories with happy _______ (end).5. I have heard that one bear _______ (flee) from the zoo last night. 查看答案