钢管外防腐层施工,属于规范规定必须检验的项目有()。
A.水泥砂浆抗压强度
B.外防腐层厚度
C.电火花捡漏
D.粘结力
E.内防腐层厚度
参考答案:B, C, D
维生素D缺乏病初期最早出现X线改变的部位是()
A.肋骨胸骨端
B.胫骨远侧干骺端
C.桡骨近侧干骺端
D.尺骨远侧干骺端
E.肱骨远侧干骺端
---- How long was it ______ you finally reached your goal of becoming a doctor?
---- Five years.
A.before
B.since
C.when
D.until