【判断题】发生拉曼散射的结果将导致WDM系统中短波长通路产生过大的信号衰减,从而限制了通路数。
【单选题】Early settlers_______ their survival _______ hard work and determination to succeed.
【多选题】根据政府采购法规规定,在政府采购活动中,关于保证金的规定错误的是:()
B.
投标保证金只能以支票、本票或者担保机构出具的保函等非现金形式提交
C.
投标人未按照招标文件要求提交投标保证金的,投标无效。
D.
中标供应商的投标保证金应当自政府采购合同签订之日起5个工作日内退还
【单选题】Early settlers believe that a sunken body could be located by casting into a stream ______.
B.
a bandanna that had been worn by a drowned man
D.
a bandanna that had been blessed
【简答题】Both the early European settlers and the Aborigines had to______about natural products of Australia.
【单选题】In the early period, European settlers resorted to deceit and even war to deal with ______ who inhabited the American continent earlier than them.
【判断题】The early settlers in the colony discovered a way to make money by growing tobacco. ()
【判断题】一个人的智商就是内能 U ,勤奋就是 pV ,二者之和就是成功,好比焓。成功 (H)= 天才 (U)+ 勤奋 (pV) 。
【判断题】发生拉曼散射的结果将导致WDM系统中短波长通路产生过大的信号衰减,从而限制了通路数。()