弯管时,要尽量考虑()。A、选较大曲率半径弯管。 B、选较小曲率半径弯管 C、选厚壁 发布时间:2017-07-26 09:52 │ 来源:www.tikuol.com 题型:单项选择题 问题: 弯管时,要尽量考虑()。A、选较大曲率半径弯管。B、选较小曲率半径弯管C、选厚壁管D、选薄壁管
题型:单项选择题 He was not really in the mood for anything ______ it dawned on him that it had not been his fault.A.sinceB.whenC.afterD.until 查看答案
题型:单项选择题 患儿,4岁,因右下肢不能站立行走,伴有不愿言语,咳嗽乏力,呼吸浅快,腱反射消失等临床表现,被确诊为脊髓灰质炎。该病儿主要的病变部位()A.大脑皮质B.大脑皮质+脊髓胸腰段C.延髓型D.脊髓颈、胸腰段E.延髓+脊髓腰段 查看答案