【简答题】体育锻炼能使心肌发达,收缩有力,心脏工作潜力大。如表是安静状态时反映甲、乙两同学心脏工作能力的数值,根据表格探究以下问题。 (1)计算两位同学的每搏输出量并填入表中。 (2)根据两位同学的每搏输出量,判断甲、乙两同学哪位是运动员,并写出判断的理由:_____,__________________。 (3)假如剧烈运动时,甲、乙两同学的最高心率均相同,每分输出量越大,心脏工作潜力越大,试判断甲、乙两...
【单选题】关于影响动脉血压的因素的叙述错误的是
A.
心脏每搏输出量增大,收缩期动脉血压的升高更为明显
E.
循环血量不变而血管系统容量增大,会造成动脉血压下降
【单选题】If the president wants to put a treaty into effect, he has to get the approval by two thirds of the ()
【单选题】有关动脉血压,正确的是
B.
正常青年人安静时收缩压在100~120mmHg
【简答题】The president wants to explore every towards peace in the region. (way)
【单选题】主舒张压要反映心肌收缩力和心脏每搏输出量的大小,收缩压主要反映动脉血管的弹性及外周小血管阻力的大小。
【单选题】The president wants to promote with China.
【判断题】If the president wants to put a treaty into effect, he has to get the approval by two thirds of the senate.