A . 放于离地高25cm~30cm,离天花板50cm,离墙5cmB . 放于离地高20cm~25cm,离天花板50cm,离墙5cmC . 放于离地高20cm~25cm,离天花板30cm,离墙5cmD . 放于离地高20cm~25cm,离天花板50cm,离墙15cm
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