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單項(xiàng)選擇題

Air trapped in the hydraulic fluid of a steering system should be indicated by （）.

A.the pump over-speeding
B.an improper rudder response
C.bubbles in the sight glass
D.ram relief valves lifting

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單項(xiàng)選擇題

Overgreasing of ball bearings installed on pumps will result in （）.

A.smoother pump operation
B.overheating of the bearing
C.reduced corrosion in the bearing
D.increased pump capacity

單項(xiàng)選擇題

The energy associated with molecules is known as （）.

A.kinetic energy
B.potential energy
C.mechanical energy
D.thermal energy

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