就单根神经纤维而言，与阈强度相比，刺激强度增加一倍时，动作电位的幅度

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='29014' and id < 2360943 and id<>'2360943' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29014' and id > 2360943 and id<>'2360943' order by id asc limit 5