单项选择题

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

点击查看答案&解析

上一题目录下一题

相关考题

单项选择题

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

单项选择题

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

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

单项选择题

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