当采用水平定向钻对砂性土地层进行钻进时，其导向钻头应选用的类型是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26169' and id < 2192889 and id<>'2192889' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26169' and id > 2192889 and id<>'2192889' order by id asc limit 5