A．DFC
B．TPC
C．CSMA/CA
D．MIMO
A．
B．
C．
D．
[单选题]11a使用UNⅡ-1、UNⅡ-2和UNⅡ-3频段。哪些频段在欧洲无需许可即可使用?(选择所有正确答案)A．UNⅡ-1B．UNⅡ-2C．UNⅡ-3D．UNⅡ-4.1A．B．C．D．
[单选题]小型光伏电站频率在50%UN≤U＜85%UN时最大分闸时间为（）。A . 0.1sB . 0.2sC . 0.5sD . 2s
[单选题]小型光伏电站在电网电压U<0.5Un时，要求在（）秒内分闸。（Un为光伏电站并网点的电网额定电压）A . 0.1B . 0.2C . 0.3D . 0.5
[问答题] 计算题：某变压器额定容量为100kVA，额定电压UN1＝6300V，UN2＝400V，Y，y0～Y，y11接法，现将电源由原来的6300V改变成10000V，若保持低压绕组匝数不变，即N2＝40匝，求原来的高压绕组是多少匝？新的高压绕组为多少匝？
[单选题]Is a massive volume of structured and unsteuctured data so large it is difficult to process using traditional database or software technique（ ）.A．Data Processing systemB．Big DataC．Data warehouseD．DBMS
[单选题]逆调压时，要求高峰时不高于（）Un。A . 1.0B . 1.025C . 1.05D . 1.075
[单选题]在所列的软件中：1．Office 2003；2．Witldows XP；3．UNIX；4．AutoCAD；5．Oracle；6．Photoshop；7．Linux，属于应用软件的是______。A．1，4，5，6B．1，3，4C．2，4，5，6D．1，4．6
[试题](ii) Explain the accounting treatment under IAS39 of the loan to Bromwich in the financial statements ofA．mbush for the year ended 30 November 2005. (4 marks)
[单选题]The plunger in a jerk pump is rotated until the release port is uncovered If the port remains uncovered all of the time, which of the listed operations will occur?A．No fuel will be deliveredB．The maximum effective stroke will be attainedC．The fuel de
[单选题]Cost of pipeline is very different of underground conditions. Is it right? （）A . NotB . YesC . They can’t compareD . Not discussion in the paragraph