问题
单项选择题
1.6T波分设备160波系统时下列必须的放大盘有()。
A.C波段OBA;
B.ROA;
C.RAU;
D.OFA。
答案
参考答案:A
1.6T波分设备160波系统时下列必须的放大盘有()。
A.C波段OBA;
B.ROA;
C.RAU;
D.OFA。
参考答案:A
用方框中所给单词的适当形式填空,每个单词限用一次。
小题2:Can you make __________ for the lady? 小题3:The more we know the world, the more _________we will be. 小题4:Do you think this kind of water is safe for_________? 小题5:The old man invited all his friends to his __________ birthday party last Sunday. |