【单选题】
A <{p}>Down, Init,2-Way, ExStart, Exchange, Loading, Full<{br/}><{/p}>
B <{p}>Down,Init,ExStart,Exchange,Loading,Full<{br/}><{/p}>
C <{p}>Down,ExStart,2-Way,Init,Exchange, Loading,Full<{br/}><{/p}>
D <{p}>Down, Init,2-Way,Exchange,ExStart,Loding,Full<{br/}><{/p}>
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