单项选择题
The way to reduce （） is to build up a film of lubricant between any two surfaces that rub against each other.
A.friction
B.collision
C.inertia
D.resistance
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相关考题
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单项选择题
The viscosity regulator controls the fuel oil temperature （） provide oil at the correct viscosity for combustion.
A.in order that
B.because of
C.in order to
D.owing to -
单项选择题
The viscosity regulator controls the （） of the fuel oil in order to provide the oil at the correct viscosity for combustion.
A.temperature
B.pumping rate
C.pressure
D.heat -
单项选择题
The viscosity regulator controls （） in order to provide oil at the correct viscosity for combustion.
A.the engines speed
B.the engines load
C.the fuel oil temperature
D.the fuel oil flow
