剖宫产手术前患者出现低血压时，应使患者卧向() ["A．右侧","B．左侧","C．头高脚低","D．头低脚高","E．以上都不是"]
胃大部切除手术术前皮肤准备的范围是() ["A．上起乳头连线，下至耻骨联合，两侧至腋后线","B．上起锁骨连线，下至耻骨联合，两侧至腋后线","C．上起乳头连线，下至大腿上1/3，两侧至腋中线","D．上起剑突水平，下至大腿上1/3，两侧至腋后线","E．上起乳头水平，下至耻骨联合，两侧至腋中线"]
上颌突形成中鼻突形成侧鼻突形成球状突形成 ["上唇人中部分","上唇两侧部分","两侧鼻翼","鼻梁和鼻尖","下唇"]
第一秒末时间肺活量的正常值是肺活量的() ["A．83%","B．86%","C．96%","D．99%","E．与肺活量大小无关，有一恒定值"]
患者胆囊切除手术后3天，体温39℃，伤口红肿疼痛，首先考虑() ["A．肺部感染","B．腹腔脓肿","C．切口感染","D．外科手术热","E．尿路感染"]
只存在于多根牙牙周末数量最多，力量最强将牙向牙槽窝牵引，对抗侧方力维持牙齿直立的主要力量固定牙根尖，保护根尖孔
