问题
判断题
主令控制线路是主令控制器与交流磁力控制盘相配合组成的一个完整的电气控制系统，用来控制主电动机的启动、调速、换向和制动等。
答案
参考答案：对
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主令控制线路是主令控制器与交流磁力控制盘相配合组成的一个完整的电气控制系统，用来控制主电动机的启动、调速、换向和制动等。
参考答案：对
| 完形填空 | ||||
| There’s a zoo in our city. My parents often take me there _1__ Sundays. I like _2__. I have a lot of toy animals in my room. In the _3__ I can see tigers, elephants, pandas and many other animals. Some animals are friendly, __4_ some are not. Tigers, bears and lions are __5_. That’s __6__ they have to stay in cages. But I think it’s bad for animals to stay in cages. The animal in cages can’t be __7_. I think the most interesting animals in the zoo are the dolphins. I like __8__ them swim. They can play __9__a ball. They are very _10__ to people. If you fall into water and can’t swim, they can come to help you. | ||||
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