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参考解析：
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】下列有关热水加热器的说法不正确的是（）。
A.
主要用于对供入洗消帐篷内的水进行加热
B.
每次使用完毕，擦拭热水罐外部及燃油过滤器
C.
每6个月擦拭泵内过滤器和用酸性不含树脂的润滑油擦拭燃烧器马达
D.
每使用300次点火器喷嘴后，检查是否积碳，并擦拭干净
【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
相关题目：
【单选题】重新组装板式换热器应当用（）清洗密封槽。
A.
A、乙酸
B.
B、乙醇
C.
C、水
D.
D、丙酮
【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】下列有关热水加热器的说法不正确的是（）。
A.
主要用于对供入洗消帐篷内的水进行加热
B.
每次使用完毕，擦拭热水罐外部及燃油过滤器
C.
每6个月擦拭泵内过滤器和用酸性不含树脂的润滑油擦拭燃烧器马达
D.
每使用300次点火器喷嘴后，检查是否积碳，并擦拭干净
【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
【多选题】根据材质不同换热器可分为（）
A.
针式换热器
B.
太空材料换热器
C.
粘土换热器
D.
金属换热器
【单选题】洗瓶时水压
A.
＞0.25Mpa
B.
0.25Mpa
C.
＞0.3Mpa
D.
＞0.35Mpa
【单选题】静水压力的要素有（）。
A.
大小
B.
方向
C.
作用点
D.
大小、方向、作用点
【单选题】在水压大于（）MPa时采用隔离式探放水。
A.
1MPa
B.
2MPa
C.
3MPa
D.
4MPa
【多选题】土中的水,哪些不能够传递静水压力?
A.
强结合水
B.
弱结合水
C.
重力水
D.
潜水