Youshould______thewheelsofyourbicycletoreducethefriction. A: label B: illustrate C: lubricate D: manipulate

Youressayisgood,youneedto______itabit. A: polish B: delete C: supplement D: lubricate

Which of the following methods is normally used to lubricate bearings in a small high-speed diesel engine?（）

The function of a lubricating oil is （） to lubricate the running surface （） to carry away a great deal of heat.

You should ______ the wheels of your bicycle once a month. A: fabricate B: lubricate C: elaborate D: illustrate

You should ______ the wheels of your bicycle once a month. A: fabricate B: confiscate C: lubricate D: syndicate

He never attempted to ______ any excuse for being late. A: fluctuate B: fabricate C: lubricate D: manipulate

The invention of agriculture, however, did not permanently __________ man from the fear of food shortages, hunger and famine. A: traverse B: lubricate C: extract D: emancipate

To lubricate the swivel or remove corrosion from a fire hose coupling，you should use（）. A: glycerine B: graphite C: kerosene D: fresh water and soa

He cleaned the old machine and ( ) the moving parts with a little mineral oil, hoping that it could work again. A: delete B: contribute C: demonstrate D: lubricate