下载APP
【单选题】
低压加热器疏水可采用逐级自流的方式流至某一压力较低的加热器中，再用疏水泵打入（）。
A.
凝汽器
B.
下级加热器
C.
除氧器
D.
该级加热器出口的主凝结水管路
举报
参考答案：
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