A . A、0.5级,2.0级,0.2S级,0.2S级B . B、0.5或0.5S级,2.0级,0.2级,0.2S级C . C、0.5S级,2.0级,0.2级,0.2S级D . D、0.5或0.5S级,2.0级,0.2S级,0.2S级
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