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
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.
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（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.