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單項選擇題

In an electro-hydraulic steering system, under movement is maintained in close synchronization with the steering wheel position by means of the （）.

A.trick-wheel
B.follow-up control
C.six-way valve
D.Rapson slide

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單項選擇題
The internal force of a material, which tends to resist deformation when subjected to external forces, is known as （）.
A.stress
B.strain
C.shear strength
D.ultimate tensile strength
單項選擇題
An increase in rotor clearances in a rotary pump will （）.
A.increase discharge pressure
B.decrease pump capacity
C.decrease pump cavitation
D.decrease reaction ring clearance

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