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[单选题]偏移值和曲折值的统称是()。
A. 偏差度
B. 同轴度
C. 偏心值
D. 偏中值
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学习资料:
[单选题]轴系应用合理校中原理校中时,普遍采用()定位,然后用()验证。
A. 测偏中值法/顶举法
B. 顶举法/测偏中值法
C. 顶举法/顶举法
D. 测偏中值法/测偏中值法
[单选题]当铁梨木艉轴承产生裂纹或开裂时,可采用()方法修理。
A. 换新
B. 局部换新
C. 上、下瓦对调
D. 换新或局部换新
[单选题]Cast iron carrier rings, () machined grooves, are provided for all the pistons.
A. caulked into
B. caulking into
C. pressed into
D. screwed into
[单选题]The jacket water temperature in a diesel engine closed freshwater cooling system is normally controlled by ()
A. regulating the level of corrosion inhibitor in the primary cooling system
B. the level of the freshwater expansion tank
C. varying the engine load to meet temperature requirements
D. the operation of the thermostatic valve
[单选题]The most common contaminate of governor hydraulic fluid is ().
A. moisture
B. dirt
C. acid
D. air
[单选题]Diesel engine exhaust gas temperatures can be used to determine individual cylinder ().
A. performance
B. horsepower output
C. fuel consumption
D. scavenge effect
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