正确答案: C
流道阻塞
题目:增压器喘振的常见原因是()。
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学习资料的答案和解析:
[单选题]并联连接系统按照部件的连接情况可分为备用部件和基本部件,根据使用情况有()。Ⅰ.固定式连接热态(在负荷下)各用方式;Ⅱ.固定式连接冷态(在无负荷下)各用方式;Ⅲ.不固定式(流动式)连接各用方式
Ⅰ+Ⅱ+Ⅲ
[单选题]柴油机镀铬气缸套正常磨损率应在()mm/kh范围内。
0.01~0.03
[单选题]防止拉缸的工艺措施主要是()。Ⅰ.保证活塞运动装置的安装精度;Ⅱ.保证活塞运动装置的对中性;Ⅲ.采用波纹加工;Ⅳ.采用精车加工;Ⅴ.采用研磨加工。
D.Ⅰ+Ⅱ+Ⅲ
[单选题]轴系的同轴度不符合要求时,则轴系的()也必然不符合要求。
δ总、φ总
[单选题]Before a marine diesel engine is started the cylinders and pistons must be ().
warmed up gradually to appropriate temperature
[单选题]The cast iron guide-ways for () are attached to the top section and seal off the crankcase.
the cross-head
[单选题]The main purpose of the piston oil scraper rings is to ().
reduce the amount of lube oil burned in the combustion chamber
[单选题]The most important factor in engine performance is the actual power output at the end of the crankshaft available for doing workThis is known as ().
brake horsepower