A.aluminum plates
B.lead cathodes
C.copper baffle plates
D.sacrificial zincs
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A.bearing pressure in a four-stroke\cycle acting single diesel engine is continually reversed
B.bearing pressure in a two-stroke\cycle single acting diesel engine is continually reversed
C.the maximum bearing pressure is higher in a single acting two-stroke/cycle diesel engine
D.two-stoke/cycle diesel engines require more complicated lubrication piping
A.Common-rail injection
B.Air injection
C.Jerk pump injection
D.Distribution injection
A.two position control
B.signal speed floating control
C.proportional speed floating control
D.reset control
A.two position control
B.signal speed floating control
C.proportional control
D.reset control
A.compressed air and nitrogen
B.helium and nitrogen
C.oxygen and hydrogen
D.oxygen and acetylene
最新試題
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
The main purpose of port State control is not to（）
The condensers located in various stages of a flash evaporator are cooled by（）
The treatment of the fuel oils involves storage, heating, filtering and（）
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
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Using a file without a handle may result in （）