A.transverse
B.longitudinal
C.circumferential
D.radial
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A.micro-seizure
B.scratch
C.break
D.stick
A.Lack of elastic tension, when the rings are pressed into the groove by means of a stick
B.Blackish appearance
C.Fractured rings and missing rings
D.all off the above
A.micro-seizure
B.sticking
C.scratched
D.breakage/ollapse
A.micro-seizure
B.sticking
C.scratched
D.breakage/collapse
A.hazy light
B.hazy light brown
C.hazy light blue
D.hazy light grey
最新試題
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
When does auxiliary burner of incinerator put into operation? （）Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
Under MARPOL Code the ship to which it applies has to carry （）
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
The main purpose of port State control is not to（）
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（）
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）
The additional mark （）in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.