鉴别痔疮脱出、脱肛、息肉痔常用的体位是:() ["侧卧位","膝胸位","截石位","倒置位","蹲位"]
一条380V线路,导线为LJ-35型,电阻为0.92Ω/km,电抗为0.352Ω/km,功率因数为0.8,输送平均有功功率为30kW,线路长度为400m。试求线路电压损失率ΔU%。
直肠下部不可忽视的检查方法是:() ["肛门视诊","肛门指诊","钡灌肠X线检查","乙状结肠镜检查","以上均不对"]
对肛门固摄粪便,不使其无控制的排出起重要作用的是:() ["肾的封藏作用","脾的升清作用","肺的宣发作用","肝的斡旋作用","大肠的传化作用"]
肛门为下列哪个脏腑之窍:() ["心","肺","肝","肾","脾"]
简述皆伐更新的优缺点及选用条件。