正确答案: C
the cams are not properly set
题目:Blow-off of the relief valves of the main cylinders during operation indicates ().
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学习资料的答案和解析:
[单选题]在上紧重要螺栓的螺母之前,应将螺纹部分和各承压面彻底清洁干净并涂以适当的润滑剂(如二硫化钼),其主要目的是()。
防止螺母和螺栓的螺纹及螺母和承压面之间咬住
[单选题]航行中增压器发生严重的故障时,根据海况不同可供采取的应急措施有()。Ⅰ.停增压器;Ⅱ.停航;Ⅲ.锁住转子;Ⅳ.拆除转子;Ⅴ.降速航行。
Ⅰ+Ⅲ+Ⅳ
[单选题]通常艉轴管装置主要由()构成。Ⅰ.艉轴管本体,Ⅱ.衬套,Ⅲ.轴承衬,Ⅳ.艉轴承,Ⅴ.密封装置。
Ⅰ+Ⅳ+Ⅴ
[单选题]A separate piston cooling system is used to limit any contamination () piston cooling glands() the piston cooling system only.
from;to
[单选题]The diesel engine is a type of ().
internal combustion engine
[单选题]The lube oil to lubricate the surfaces of the cylinder liners is spread over by the ().
sliding piston rings