你可能感興趣的試題

單項(xiàng)選擇題

The delivery rate of a variable stroke axial piston hydraulic pump is controlled by varying the position of the （）.

A.slide block
B.tilting box
C.pintle
D.reaction ring

單項(xiàng)選擇題

Which of the following statements describes the relationship between viscosity and specific gravity?（）

A.Liquids with different viscosities will always have the same specific gravity
B.Liquids with different viscosities will never have the same specific gravity
C.Viscosity and specific gravity are directly proportional
D.Viscosity and specific gravity are not related in that one does not define or limit the other

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