单项选择题 海尔三宽变频技术是（）

未知题型 4. 挑选3个对话，并拍下视频。（尚德）25分 Conversation 1: A: What’s your first name? B: Sue A: What’s your last name? B: Chan A: How do you spell that? B: C-h-a-n A: Where are you from? B: I am from Yiwu, Zhejiang. A: Nice to meet you. B: Nice to meet you too. Conversation 2： A: Where is your school? B: It is in Yiwu. A: What’s the name of you school? B: Yiwu Industrial and Commercial College. A: It is a nice school. B: Thanks. Conversation 3: A: What time is it? B: It is 9:00 am. A: Oh, I have English class now. B:You have got to run or you will be late. A: I bet. Conversation 4: A: That black T-shirt is nice. I like it. How much is it? B: Thirty dollars. A: Wow! That’s expensive. How about the white one? B: Twenty five dollars. A: I’ll have it. Here is the money. B: Thanks.

单项选择题 下列关于施工进度计划的表述，说法错误的是（）