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[单选题]当测得臂距差Δ⊥>0时,可判断该曲轴轴线呈()状态,两主轴承()于相邻轴承。
A. 塌腰形/高
B. 塌腰形/低
C. 拱腰形/高
D. 拱腰形/低
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学习资料:
[单选题]目前所用燃油的排气露点一般在()℃范围.
A. 80—100
B. 100—120
C. 120—140
D. 140—160
[单选题]艉轴承间隙一般是在距艉轴承后端面()处所测的径向间隙。
A. 200mm
B. 150mm
C. 100mm
D. 500mm
[单选题]() the cylinder will contain a great weight of air and will be capable of burning a great quantity of fuel.
A. At the beginning of the compression stroke
B. At the beginning of the suction stroke
C. At the end of the working stroke
D. At the end of the exhaust stroke
[单选题]Which of the following methods is normally used to lubricate bearings in a small high-speed diesel engine?()
A. Splash lubrication
B. Pressure lubrication
C. Sight feed lubricators
D. Mechanical lubricator
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