下列()属于影响社会知觉的主观因素。
A.认知者本身的特点
B.认知对象本身的特点
C.知觉的情境
D.逻辑推理的定势作用
参考答案:A, D
Some scientists think that it may take ______ years to make robots look like people, and do the same things as us.
A、hundreds of
B、two hundreds of
C、two hundreds
异步串行通信接口标准RS-232C的逻辑0的信号电平是( )。
A.OV~+5V
B.+3V~+15V
C.-3V~-15V
D.-5V~0V