正确答案: B

4

题目：柴油机未装连杆状态下，盘车一周可测得曲轴（）个臂距值。

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学习资料的答案和解析：

[单选题]发动机连续起动次数越多其机动性越好，对每台可换向的主机在冷机条件下应不少于（）次。

12

[单选题]若已知曲轴的轴线状态呈拱腰形，则其两主轴承高度必然（）于相邻轴承，测得臂距差为（）值。

高/负

[单选题]For a main diesel engine the lube oil in the bearings is drawn from （）, usually located in the bedplate.

a sump

[单选题]Main bearings are required to support the crankshaft at each （）.

journal

[单选题]The bore of each cylinder is formed in a liner which can be （） when worn out.

replaced

[单选题]The engine may lose power or slow down during running, when this occurs, the first cause possible may be hot bearings and （） of the pistons in the cylinders.

seizure

[单选题]With （）, the corrosion problems are much reduced in a central cooling system.

less equipment in contact with sea water