二波段收音机中,中波与短波之间的变换是靠调节输入回路的电容实现。
参考答案:错
A middleaged woman came________to the bus stop only________the bus had gone. [ ]
A. to run; to find
B. running; to find
C. and ran; found
D. running; finding
什么样的人际情报网络是好的网络?