根据经验，当低速重载时，轴瓦与轴的接触角可选择（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24902' and id < 2124862 and id<>'2124862' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24902' and id > 2124862 and id<>'2124862' order by id asc limit 5