问题
判断题
采用晶体管的变流器，其成本比晶闸管变流器高。
答案
参考答案：对
搜题请搜索小程序“爱下问搜题”
采用晶体管的变流器，其成本比晶闸管变流器高。
参考答案：对
| 读下面的对话，完成表格。 | ||||||||||||
| Sam: What does your father do? Amy: He is a math teacher. Sam: Where does he work? Amy: He works in a school. Sam: How does he go to work? Amy: He goes to work by car. What about your father? Sam: My father is a doctor. He works in a hospital. He goes to work by bike.
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