【判断题】{MM440变频器的运行频率的设定方式常用的有3种:1.由参数P1040来给定,需设置P1000=1;2.由模拟通道信号决定,需设置P1000=2;3.由开关端子决定,则需设置P1000=3;}
【单选题】下面关于Word2010中“格式刷”工具的说法[ ]是错误的。
【判断题】开关电源就是利用电子开关器件,通过控制电路,使电子开关器件不停地“导通”和“关断”,让电子开关器件对输入电压进行脉冲调制,从而实现DC-AC、DC-DC电压变换,电压输出可调,并且可以自动稳压。()
【单选题】Follow a passion that doesn't relate to your major. Just let yourself really learn from your( ) .
【单选题】Follow a passion that doesn't relate to your ( ). Just let yourself really learn from your environment.
【单选题】What does the man think of the advice that "you should follow your passion”? It is recommendable.
【单选题】Many of them didn’t follow his advice, ______ they knew it to be useful.
【单选题】下面关于Word中“格式刷”工具的说法,不正确的是( )