【单选题】听力原文:M: I am surprised to see you using the record player I was going to throw W: It still works. You'd better get fid of these wasteful habits. What does the woman mean?
A.
The record player is still useful.
B.
The man shouldn' t have thrown it away.
C.
The man should abandon his bad habit.
D.
She is going to use the record player.
【单选题】冯·诺伊曼的计算机理论,硬件由主要是由控制器、运算器、( )、输入设备和输出设备五部分组成。
【单选题】可锻铸铁中的团絮状石墨由下述方式获得()
【单选题】可锻铸铁中的团絮状石墨由下述方式获得( )
【判断题】正弦交流电的频率提高时,通电线圈的感抗越大。
【判断题】伽利略望远镜的物镜是凸透镜,目镜也是凸透镜。