题目内容
（请给出正确答案）
A.has run continuously for a long period
B.suction pressure is below normal
C.oil level is below normal
D.starts after a long idle period
简答题官方参考答案
（由简答题聘请的专业题库老师提供的解答）
更多“Excessive oil foaming in the crankcase of a refrigeration compressor is most likely to occ”相关的问题
If a used lube oil analysis indicates excessive chromate content, this means
A.air filtration is inadequate
B.engine coolant is leaking into the lube oil
C.fuel oil is leaking into the lube oil
D.the piston rings are excessive worn
If a used lube oil analysis indicates an excessive chromate content, this means .
A.air filtration is inadequate
B.engine coolant leaking into the lube oil
C.fuel oil is leaking into the lube oil
D.the piston rings are excessively worn
Excessive piston ring wear in a diesel engine will cause ____________.
A.high lube oil viscosity
B.increased lube oil consumption
C.low lube oil temperatures
D.high firing pressures
Excessive lube oil consumption can result from worn or broken ______________.
A.piston rings
B.valve guides
C.valve seals
D.all of the above
The primary purpose of oil control rings on a diesel piston is to________.
A.provide a reservoir for cylinder lubrication
B.pump oil into the combustion space for cylinder cooling
C.prevent excessive lubricating oil consumption
D.allow hydraulic oil film formation on the cylinder
A.clogged lube oil piping
B.excessive valve-guide clearance
C.high lube oil viscosity
D.low lube oil temperature
A. High jacket water pressure
B. High lube oil pressure
C. Low lube oil pressure
D. Excessive turbo charger speed
Excessive vibration of an automatically fired auxiliary boiler can be caused by _____.
A.air or water in the furnace
B.combustion pulses
C.fuel oil pump failure
D.flame failure
A.a broken shaft on the freshwater pump
B.an excessive accumulation of scale in the heat exchanger
C.an incorrect thermostatic element operating range
D.lube oil in the cooling water
A dirty intercooler on an air compressor will cause _____.
A.damage to the un-loader operating diaphragm
B.an increase in current flow to the motor
C.high pressure in the receiver and filter
D.an excessive consumption of crankcase oil
警告：系统检测到您的账号存在安全风险
为了保护您的账号安全，请在“简答题”公众号进行验证，点击“官网服务”-“账号验证”后输入验证码“”完成验证，验证成功后方可继续查看答案！
