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【判断题】
电力产品是一次能源产品。()A.
正确
B.
错误
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】深基坑土方开挖方法主要有（）等。
【单选题】Which of the following influences the position of the interface between the liquid seal and the oil in a purifier?
A.
Height of the machine
B.
Temperature of the liquid seal
C.
Gravity disc
D.
Bowl diameter
【简答题】深基坑土方开挖方法主要有 哪些?
【单选题】In a disk-type lubricating oil purifier, _______.
A.
the purifier driving gears are lubricated by the reclaimed
B.
oil as it leaves the bowl all dirt and sludge are automatically discharged with the cooling water
C.
sealing water must never be supplied until after oil is fed to the unit
D.
deterioration of the bowl ring gasket will cause the purifier to lose its water seal
【简答题】制药工程项目从设想到交付生产整个过程可分为 、 和 。
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