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【简答题】
简述制冷系统的工作过程？
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皮皮学刷刷变学霸
举一反三
【单选题】Modem forms of transportation have greatly encouraged __________
A.
the phenomenon of deprivation of employees leisure time
B.
the disconnection between peoples work and their family life
C.
the commutation between the working places and employees homes
D.
peoples desire to work far away from where they were born