问题
单项选择题
热力膨胀阀的选用应考虑的因素是（）。
Ⅰ制冷剂系统选用的冷剂
Ⅱ蒸发器的蒸发温度
Ⅲ蒸发器的降压大小
A.Ⅰ+Ⅱ+Ⅲ
B.Ⅱ+Ⅲ
C.Ⅰ+Ⅱ
D.Ⅰ+Ⅲ
答案
参考答案：A
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热力膨胀阀的选用应考虑的因素是（）。
Ⅰ制冷剂系统选用的冷剂
Ⅱ蒸发器的蒸发温度
Ⅲ蒸发器的降压大小
A.Ⅰ+Ⅱ+Ⅲ
B.Ⅱ+Ⅲ
C.Ⅰ+Ⅱ
D.Ⅰ+Ⅲ
参考答案：A
| Read and match. 给下列问句选择合适答语。 |
| ( ) 1. Who is tired and hungry? ( ) 2. Are you okay? ( ) 3. Can Jenny fly a kite? ( ) 4. How old is the Palace Museum? ( ) 5. Can you find the children playing cards? | A. Yes, I can. B. I am tired and hungry. C. It's about five hundred years old. D. Yes, Jenny is having fun. E. No, I hurt my arm. |