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【单选题】
所有高压加热器的汽侧排气接至除氧器。低压加热器汽侧排气接至（）中。
A.
除氧器
B.
凝汽器
C.
疏水立管
D.
清洁水箱
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【单选题】Most shoppers know the feeling. You stand in front of piles of organic produce and wonder what those premium prices are buying you over and above what you get from standard foods. Not a lot nutrition-...
A.
do not use naturally produced fertilisers
B.
produce carbon dioxide when removing weeds
C.
use high doses of weed-killer
D.
use too many resources to qualify for organic status
【单选题】Most shoppers know the feeling. You stand in front of piles of organic produce and wonder what those premium prices are buying you over and above what you get from standard foods. Not a lot nutrition-...
A.
they are approved by many experts
B.
C. they won’t cause diseases
C.
B. they taste better than standard foods
D.
they are free from pesticides
【多选题】高低压加热器装空气管的目的是（）。
A.
及时排除加热器蒸汽中含有的不凝结气体，增强传热效果
B.
及时排除不凝结的气体，同时利用回收不凝结气体和蒸汽的热量
C.
使两个相邻加热器内的加热压平衡
D.
启用前排汽
相关题目：
【单选题】Most shoppers know the feeling. You stand in front of piles of organic produce and wonder what those premium prices are buying you over and above what you get from standard foods. Not a lot nutrition-...
A.
do not use naturally produced fertilisers
B.
produce carbon dioxide when removing weeds
C.
use high doses of weed-killer
D.
use too many resources to qualify for organic status
【单选题】Most shoppers know the feeling. You stand in front of piles of organic produce and wonder what those premium prices are buying you over and above what you get from standard foods. Not a lot nutrition-...
A.
they are approved by many experts
B.
C. they won’t cause diseases
C.
B. they taste better than standard foods
D.
they are free from pesticides
【多选题】高低压加热器装空气管的目的是（）。
A.
及时排除加热器蒸汽中含有的不凝结气体，增强传热效果
B.
及时排除不凝结的气体，同时利用回收不凝结气体和蒸汽的热量
C.
使两个相邻加热器内的加热压平衡
D.
启用前排汽
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