單項選擇題

Rotation of the steering wheel on the navigation bridge initiates oil pressure being applied to the steering gear rams by （）.

A.regulating the oil flow with the six-way valve
B.moving the automatic differential valve
C.moving the receiving tele-motor which regulates the two-way valve
D.varying the angle of a tilting box or eccentricity of a floating ring

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單項選擇題

Which characteristic or condition will have the greatest effect on increasing a hydraulic oils viscosity?（）

A.Pour point
B.Cloud point
C.Vacuum
D.Pressure

單項選擇題

When there is no movement of the rams on an electro-hydraulic steering gear, the tilting box of the running pump is （）.

A.set for maximum torque
B.on the purge and vent stroke
C.in the neutral position
D.rotating backwards

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Rotation of the steering wheel on the navigation bridge initiates oil pressure being applied to the steering gear rams by （）.

你可能感興趣的試題

Which characteristic or condition will have the greatest effect on increasing a hydraulic oils viscosity?（）

When there is no movement of the rams on an electro-hydraulic steering gear, the tilting box of the running pump is （）.

99色精品-9色在线-99色在线-99色视频国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精