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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】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；
【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】间壁式换热器的特点
A.
传热速率快
B.
流动阻力大
C.
应用广泛
D.
以上都是
【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】在以下换热器中，（）不易泄露。
A.
波纹管换热器
B.
U型管换热器
C.
浮头式换热器
D.
板式换热器
【单选题】E1-113是（）换热器。
A.
初底-减一
B.
初底-减二
C.
初底-减三
D.
初底-减渣
【多选题】⾼压加热器分为()
A.
混合式
B.
表⾯式
C.
对流式
D.
逆流式
【判断题】E-112是列管换热器。
A.
正确
B.
错误
【单选题】NCC320柜配有（）个230VAC，250W的加热器。
A.
1；
B.
2；
C.
3；
D.
4
【单选题】制冷换热器是指（）和冷凝器。
A.
毛细管
B.
汽液分离器
C.
蒸发器
D.
压缩机
【单选题】我们厂所用的换热器是 （ ） 式换热器
A.
石墨
B.
板式
C.
螺旋
D.
列管
【多选题】管式换热器的主要组成部分有（）
A.
铵座
B.
封头
C.
筒体
D.
管束
【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
【单选题】流体通过换热器的壳程压力损失为（）MPa。
A.
0.005~0.01
B.
0.01~0.03
C.
0.03~0.05
D.
0.05~0.1
【单选题】H-L 型螺纹锁紧环换热器的结构是（）
A.
管壳程为整体煅焊
B.
有内外圈压紧螺栓
C.
壳程与管程通过大法兰连接
D.
管箱与管板不固定在一起