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【简答题】
磨头轴瓦温度控制（）以下，磨尾轴瓦温度控制（）以下，主电机绕组的温度不能超过（），磨头磨尾稀油站在温度低于；（） 时必须启动加热器。
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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