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皮亚杰认为:任何知识都发源于(),主客体的各自联系分别演化成为()和()。

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In selecting a tug for moving a vessel,consideration should be given to its().

A. indicated horsepower,bollard pull,and displacement
B. indicated horsepower,maneuverability,and displacement
C. indicated horsepower,bollard pull,and maneuverability
D. bollard pull,displacement,and maneuverability

围棋博大精深,具有十分丰富的象征意义,请试举几点加以说明。

What is the function of an air receiver in the compressed air system on a ship? ()

A. Condenses moisture
B. Provides overpressure protection
C. Purifies the air
D. Acts as an accumulator

什么是城市规模与城市规模经济?城市规模经济表现在哪些方面?

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