了解所检测的血管的血流是否为髙阻力，应 用频谱多普勒测量（     ）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='25745' and id < 2163590 and id<>'2163590' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25745' and id > 2163590 and id<>'2163590' order by id asc limit 5