钢筋机械连接接头连接区段的长度应为下列哪项()
A.35d
B.40d
C.45d
D.50d
参考答案:A
There is someone at home because the lights are _____.[ ]
A. out
B. on
C. not
吴茱萸尤善于治疗的病证是( )
A.寒疝腹痛B.厥阴头痛C.风湿痹痛D.脘腹冷痛E.虫积腹痛