單項(xiàng)選擇題

In an electro-hydraulic steering gear system, when will the variable displacement pump be placed on stroke?（）

A.When the helm is at any angle other than amidships
B.When the six-way valve is opened
C.When the ram relief valves lift
D.When the redder angle is different from the position of the helm

你可能感興趣的試題

單項(xiàng)選擇題

An additive used to improve the ability of a lube oil to reduce friction is known as a/an （）.

A.suppressant additive
B.dispersant additive
C.extreme pressure additive
D.viscosity improver additive

單項(xiàng)選擇題

The suction - force principle of operation is a typical characteristic of （）.

A.centrifugal pumps
B.jet pumps
C.propeller pumps
D.reciprocating pumps

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In an electro-hydraulic steering gear system, when will the variable displacement pump be placed on stroke?（）

你可能感興趣的試題

An additive used to improve the ability of a lube oil to reduce friction is known as a/an （）.

The suction - force principle of operation is a typical characteristic of （）.

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