下列物质应避免与水接触以免发生危险的是：（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30400' and id < 2457390 and id<>'2457390' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30400' and id > 2457390 and id<>'2457390' order by id asc limit 5