问题
多项选择题
关于丙烯制冷压缩机开车前应具备的条件有()。
A.冷剂收集罐充液足够
B.系统保压在0.3MPa~0.6Mpa
C.确认所有的导淋、放空阀关闭
D.确认系统盲板已按清单正确拆装
答案
参考答案:A, B, C, D
关于丙烯制冷压缩机开车前应具备的条件有()。
A.冷剂收集罐充液足够
B.系统保压在0.3MPa~0.6Mpa
C.确认所有的导淋、放空阀关闭
D.确认系统盲板已按清单正确拆装
参考答案:A, B, C, D
阅读理解 | |||
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根据短文内容,选择正确答案。 | |||
1. What are Han Jun’s favorite animals? | |||
A. Tigers. B. Pandas. C. Elephants. | |||
2. What does Zhao Ziyi look like? | |||
A. She is short with short black hair. B. She is tall with long black hair. C. She is tall with short black hair. | |||
3. Where does Tony come from? | |||
A. England. B. The U.S.A. C. China. | |||
4. What do Tony and his parents like? | |||
A. Cartoon movies. B. Chinese food C. Animals. | |||
5. Han Jun and Tony are . | |||
A. in the same class B. good friends C. both 12 years old |