低位肛瘘宜采用蹄铁型肛瘘的治疗宜采用高位单纯性直瘘宜采用
A.肛瘘切开术
B.肛瘘挂线疗法
C.肛瘘外口扩大术
D.药物保留灌肠治疗
E.肛瘘部分切开+肛瘘挂线术
参考答案:A,E,B
—Where is the telephone? —__________ [ ]
A. It is below the bed.
B. It is beside the bed.
C. It is on the bed.
火灾探测器的导线用铜导线时,其截面应不小于()。
A.0.75mm2
B.1.0mm2
C.1.5mm2
D.2.5mm2