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【单选题】
高压加热器配置的疏、放水管管道不包括通向（）管道。
A.
连续排污扩容器
B.
事故疏水扩容器
C.
除氧器
D.
地沟
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参考答案：
参考解析：
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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