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【单选题】
属天然制冷剂的是:( )
A.
R12
B.
R134a
C.
CO2
D.
CO
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参考答案:
举一反三
【简答题】One day we invited some friends to dinner. When it was about six o’clock, my wife found that we had little bread. So she asked our five-year-old daughter, Kathy, to buy some. ‘Here’s a dollar,’ my wif...
【简答题】读下面的一篇短文,然后根据短文内容,将问题的最佳答案填写在题目前的括号里。 One day we invited some friends to dinner. When it was about six o'clock, my wife found that we had little bread. So she asked our five-year-old daughter, Kathy, ...
【单选题】人的创新能力的形成,也是()
A.
以创造力为基础的
B.
以创造性劳动为基础的
C.
以开拓进取为基础的
D.
以掌握丰富的科学知识为基础的
【简答题】We all have our ways of marking time. As a photographer, my life is measured from one story to the next. My oldest son was born in the middle of a long story about the Enered Species Act. My daugh...
【判断题】变压器电流速断保护是变压器主保护之一。
A.
正确
B.
错误
【判断题】憎水性电介质表面不易形成连续的水膜,表面电导比亲水性电介质的大。
A.
正确
B.
错误
【多选题】培养和提升创新创业者思维能力的方法有()
A.
培养良好的思维习惯
B.
激发创新思维
C.
优化思维结构
D.
勤学苦练
【简答题】One day we invited some friends to dinner. When it was about six o’clock, my wife found that we had little bread. So she asked our five-year-old daughter, Kathy, to buy some. “Here’s a dollar,” my wif...
【简答题】人的创新能力的形成,也是()。
【简答题】One day we invited some friends to dinner.When it was about six o'clock,my wife found that we had little bread.So she asked our five-year-old daughter, Kathy, to buy some. “Here’s a dollar,”my wife sa...
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