气阴两虚型直肠癌方选:() ["四君子汤合增液汤","大补阴丸","一贯煎","左归丸","以上均可"]
肛管癌可见:() ["早期呈疣状","肛门部突起包块","卫星转移结节","腹股沟淋巴结转移","以上均是"]
肛管直肠癌的发病年龄多在多少岁以上:() ["45","50","40","55","60"]
下面哪项的直肠癌位于手指可触及的部位:() ["60%","70%","80%","90%","50%"]
肛管直肠癌一般多为:() ["鳞癌","腺癌","囊腺癌","移行上皮癌","基底细胞癌"]
某10kV企业三班制生产,年有功与无功用电量分别为13000000kW·h和14000000kvar·h,年最大负荷利用小时Tmax=5200h,负荷系数β=0.8,求其平均功率因数值,如按要求将功率因数提高到规定值0.9,则应补偿无功容量多少(小数保留2位)?