外单位承担或外来人员参与公司系统的工作,在开始工作前,设备运行管理单位应告知些什么?
参考答案:应告知现场电气设备接线情况、危险点和安全注意事项。
选择合适的单词填空。
1. This is _________ (my, I) skirt.
2. A bird _________ (live, lives) in a tree.
3. She _________ (have, has) a skirt.
4. A _________ (tiger, lion) has stripes.
5. Cows eat _________ (meat, grass).
6. Rabbits can _________ (swim, hop).
7. How many markers _________ (are, is) there?
8. We _________ (have, has) many books.
9. _________ (She, Her) name is Jenny.
10. _________ (He, She) is Danny.
PLC的输出线圈可以放在梯形图逻辑行的中间任意位置。