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【简答题】
热真空蒸馏脱气器的加热器在使用时要注意什么？
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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】对于板式换热器的真空蒸馏式海水淡化装置,在换热器拆检前,最应注意的是___。
A.
准备合适的清洗剂
B.
测量换热器安装螺栓剩余长度
C.
检查挡水板状态
D.
检查密封圈状态
【单选题】钻井液脱气器的主要构件是（）。
A.
集气室、过滤器、搅拌系统
B.
动力马达、过滤器、进出气口
C.
进出气口、过滤器、搅拌系统
D.
动力马达、集气室、搅拌系统
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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】对于板式换热器的真空蒸馏式海水淡化装置,在换热器拆检前,最应注意的是___。
A.
准备合适的清洗剂
B.
测量换热器安装螺栓剩余长度
C.
检查挡水板状态
D.
检查密封圈状态
【单选题】钻井液脱气器的主要构件是（）。
A.
集气室、过滤器、搅拌系统
B.
动力马达、过滤器、进出气口
C.
进出气口、过滤器、搅拌系统
D.
动力马达、集气室、搅拌系统
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