According to transformer insulation and cooling methods, there are three types: 、 、 。
举一反三
- According to wine’s making process, wine can be classified into three types:
- 智慧职教: The travel itineraries can be divided into three types according to the aim of the travel: _________, _________ and ___________.
- According to the nature of reading and writing, there are three types of CD: random type, primary type and rewriting type.
- A marketing research firm, in conducting a comparative taste test, provided three types of peanut butter to a sample of households randomly selected within the state. Which of the four methods of data collection is involved when people are asked to compare the three types of peanut butter?
- According to the different causes, gap flow can be divided into three types: differential pressure flow, shear flow and ( ) flow.