接收机的预选器实际是以询问频率为中心的()滤波器。
A.全通
B.带通
C.低通
D.高通
参考答案:B
It is said that about ______of the books and magazines in the world______in English.
A. four-fifths;are written B fourth fives;are written
C, four fifth;were written D fourth fifths; were written
下列选项中,从市民中心(南门)到罗湖人才市场的可选择线路有()。
A、福中二路→金田路→红荔路→皇岗路→笋岗西路→红岭路→艺展路
B、福中二路→金田路→红荔路→华富路→泥岗路→宝安北路
C、后海大道→金田路→红荔路→彩田路→笋岗西路→桃园路→宝安北路
D、福中二路→金田路→红荔路→红桂路→宝安南路→宝安北路