单选题In the operation of a flash type evaporator equipped with air ejectors,the air and non- condensable gases are evacuated directly from the （）.Afirst stage flash chamberBsecond stage flash chamberCfirst stage after condenserDsecond stage distilling condenser
单选题
In the operation of a flash type evaporator equipped with air ejectors,the air and non- condensable gases are evacuated directly from the （）.
A
first stage flash chamber
B
second stage flash chamber
C
first stage after condenser
D
second stage distilling condenser
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