茄子呈现紫色是因为含（）色素。 ["叶绿色","类胡萝卜素","花青素","纤维素"]
关于APPT测定的临床意义，正确的叙述是（） ["APTT结果超过正常对照10s以上为延长","血友病A患者APTT大多延长","纤维蛋白原、凝血酶原缺乏时APPT缩短","血栓性疾病时APTT缩短","血中抗凝物质增多时APTT延长"]
新生儿摄取胸部正位时应选择（）. ["站立前后位","站立后前位","仰卧后前位","半坐后前位","仰卧前后位"]
引起生理性贫血的因素是（） ["长期高原生活","妊娠剧烈呕吐","妊娠中、晚期","6个月～2岁的婴幼儿","老年人"]
急诊患者及其家属的心理特点是（） ["恐惧感","归属感","陌生感","无助感","优先感"]
起动机离合器打滑，电磁开关接触不良会造成起动机（）.
