机车信号及机车工况信息由中央处理器MC68332通过数字量输入插件、数字量输入/出插件的()采集。
参考答案:开关量输入通道
_____ the teacher is at the library now. [ ]
A. Maybe
B. May be
C. May is
为了保障矿石性质的稳定,通常对原矿进行配矿后再分选。