城域网的英文缩写是______。 A．MAN B．LAN C．WAN D NOS

缺词填空：根据短文内容和首字母提示，在下文空格处填入适当的词使短文完整。（每空一词）

Are you learning in the w 1   that is best for you? We use our senses of sight, h 2   or touch to get new information. But most people p 3   using one of these senses to the others. If you are a visual (视觉的) learner, you p 4   like looking at maps or pictures. Some learners may have d 5   reading for hours and find reading rather boring, but they learn best by listening. Therefore, using a tape recorder is h 6   to them. Other learners like to learn by practicing d 7   something, and they learn best by using their body to touch, f 8   and move. K 9   this and using the best learning style, soon you will learn b 10.

小题1:     

小题2:    

小题3:     

小题4:    

小题5:      

小题6:     

小题7:     

小题8:    

小题9:     

小题10:      

中频放大器的功率增益一般为（）。

A.20—30dB

B.30—50dB

C.100—1000dB

D.500—1500dB

《一千零一夜》的《第一个老人和羚羊的故事》中，老人告诉魔鬼，这只羚羊是他的（）。

A.女儿

B.儿子

C.妈妈

D.妻子

休谟的货币数量论

现代控制理论？