High sulphur content fuel
High lube oil temperatures
High vanadium content fuel
Excessive piston slap
第1题：
In Layer 2 topologies， spanning-tree failures can cause loops in the network. These unblocked loops can cause network failures because of excessive traffic. Which two Catalyst 6500 features can be used to limit excessive traffic during spanning-tree loop conditions？ （）
第2题：
Shortage of refrigerant oil
Slight shortage of refrigerant
Excessive condenser cooling water flow
Faulty expansion valve
第3题：
Which of the conditions listed will cause a refrigeration compressor to run constantly without simultaneously decreasing the temperature in the refrigerated space?( )
A.Shortage of refrigerant oil
B.Slight shortage of refrigerant
C.Excessive condenser cooling water flow
D.Faulty expansion valve
第4题：
Closing of the solenoid valve
Closing of the expansion valve
An increase in the suction pressure
Decreasing the suction pressure
第5题：
Hydrochloric acid
Chlorine
Sulfuric acid
Zinc chromate
第6题：
In Layer 2 topologies， spanning-tree failures can cause loops in the network. These unblocked loops cancause network failures because of excessive traffic. Which two Catalyst 6500 features can be used to limitexcessive traffic during spanning-tree loop conditions？（）
第7题：
clogged air filter
compression stroke
burned exhaust valves
all of the above
第8题：
Which of the listed conditions can be considered as the single greatest cause of accidents?
A.Speed
B.Excessive knowledge or skill
C.Human error
D.Excitement
第9题：
Dirty lube oil filter
Too much piston ring wear
High lube oil viscosity
Low lube oil temperature
第10题：
Sludge
Gasoline
Fuel oil
Lube oil