A.micro-seizure
B.scratch
C.break
D.stick
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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
A.upwards；inwards
B.upwards；outwards
C.downwards；inwards
D.downwards；outwards
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