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刷刷题刷刷变学霸
举一反三
【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
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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】管加热器的作用是（）。
A.
消除多余的双氧水
B.
高温杀菌
C.
加热产品进行消毒
D.
保证正压
【判断题】加热蒸汽凝液疏水器堵会导致邻苯预热温度低。
A.
正确
B.
错误
【判断题】泄压时可略开重沸器加热蒸汽，冷凝冷却器循环水视情况关小。
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.
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】KBC80AC001冷却以下那个用户的加热蒸汽凝结水（）
A.
KBC10AC001
B.
KBA10BB001
C.
KBF10AT001
D.
KPF10AT001
【判断题】多效蒸发并没有提高蒸发量,而只是节约了加热蒸汽。
A.
正确
B.
错误
【判断题】4113-E2，E3的加热蒸汽都是饱和蒸汽。
A.
正确
B.
错误
【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
【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】在蒸发操作中，如果把三效改为四效，则加热蒸汽的使用量（）
A.
少量增加
B.
减少
C.
不变
D.
明显增加
【单选题】甲醇再沸器在投用加热蒸汽时应该进行（）。
A.
蒸汽排放
B.
再沸器暖管
C.
冷凝液排放
D.
置换空气
【判断题】精馏系统紧急停车时，首先切除加热蒸汽量。
A.
正确
B.
错误
【单选题】以下不属于加热设备的是（）。
A.
煤气管系
B.
余热锅炉
C.
交换机
D.
废气盘
【单选题】下列( )用于加热蒸汽。
A.
省煤器
B.
水冷壁
C.
过热器
D.
空气预热器
【判断题】环氧乙烷塔压高联锁会自动切断进料和加热蒸汽。()
A.
正确
B.
错误