种子寿命
患者男性,35岁,肛门突然剧烈疼痛,并出现肿物,表面呈暗紫色,触痛明显,伴便秘,口渴,烦热。舌紫,苔黄,脉弦涩。口服下列何种方剂最为适宜:() ["凉血地黄汤","槐角丸","脏连丸","黄连解毒汤","麻子仁丸"]
患者女性,49岁,有内痔十余年,近两年肛门部有一肿物,触之柔软,平时不显,排便时肿物明显,呈暗紫色,按之较硬,有坠胀感,无明显疼痛。初步诊断为:() ["血栓性外痔","静脉曲张性外痔","结缔组织外痔","肛周脓肿","以上均不对"]
贯穿结扎法操作时应注意防止以下哪项错误:() ["先结扎大的痔核,后结扎小的痔核","缝扎时不可穿入肌层","结扎术后当天不要解大便","结扎后的7~9天,减少行动","若便后痔核脱出应立即送回肛内"]
林分
生态系统