判断题

按钮、开关、继电器触点属于无源信号。( )
正确
错误

答案：正确

你可能感兴趣的试题

单项选择题

The theme of the song Dream it possible is that nothing is impossible if you just have a dream and work really hard for it.
A、正确
B、错误

单项选择题

设则级数（）
A、和都收敛
B、和都发散
C、收敛而发散
D、发散而收敛