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【判断题】

蒸汽加热器后的污氮中的水分含量应小于5ppm。()

A.
正确
B.
错误
举报
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.
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【单选题】我国规定油脂水分含量应在

A.
0.1%以下
B.
0.2%以下
C.
0.3%以下
D.
0.4%以下
E.
0.5%以下