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【单选题】
天然气站场中常用的电加热器、水套炉，均属于板型换热器。
A.
正确；
B.
错误；
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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
【单选题】下列不是换热器检修的内容的是（）。
A.
清扫管束和壳体
B.
管束焊口、胀口处理及单管更换
C.
检查修复管箱、前后盖、大小浮头、接管及其密封面，更换垫片并试压
D.
检查修理或更换塔内构件
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
【单选题】下列不是换热器检修的内容的是（）。
A.
清扫管束和壳体
B.
管束焊口、胀口处理及单管更换
C.
检查修复管箱、前后盖、大小浮头、接管及其密封面，更换垫片并试压
D.
检查修理或更换塔内构件
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