患者,男性,70岁。发现右腹股沟部可复性半球形肿物2年。查体:站立时腹股沟区内侧可见半球形肿物,未进入阴囊,平卧时肿块自行消失,压迫内环口肿物仍可出现。诊断考虑() ["右侧腹股沟斜疝","隐睾","鞘膜积液","右侧腹股沟直疝","股疝"]
试述杂草种子原生休眠的生理影响因子?
阻断脑内α2受体() ["丙咪嗪","马普替林","苯乙肼","舍曲林","氟西汀"]
试述杂草的经济意义
氯丙嗪阻断结节-漏斗部D2受体() ["催乳素分泌增加","锥体外系反应","镇吐作用","体温调节失灵","抗精神病作用"]
试述杂草的生态环境意义