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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單項選擇題

The structural members of the hull extending in a fore and aft direction are called （）.

A.frames
B.joiners
C.longitudinals
D.knees

單項選擇題

Increased internal leakage, in addition to poor hydraulic system response,and inadequate lubrication, is the result of （）.

A.pump bearings in poor condition
B.excessively worn actuator-piston packing
C.broken directional control valve centering springs
D.low hydraulic oil viscosity

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

你可能感興趣的試題

The structural members of the hull extending in a fore and aft direction are called （）.

Increased internal leakage, in addition to poor hydraulic system response,and inadequate lubrication, is the result of （）.

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