PLC在模拟运行调试中可以用编程器进行()。若发现问题,停止运行后可修改程序。
A、输入
B、输出
C、编程
D、监控
参考答案:D
- This kind of fruit ______ nice. -Yes. It ______ in the south-east of China.
A.tastes; is growing
B.is tasted; is grown
C.is tasting; is growing
D.tastes; is grown
液化气钢瓶爆炸属于()。
A.物理爆炸
B.化学爆炸
C.气体爆炸
D.固体爆炸