椎-基底动脉供血不足的经颅多普勒超声 (TCD)主要表现为（     ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25726' and id < 2162862 and id<>'2162862' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25726' and id > 2162862 and id<>'2162862' order by id asc limit 5