A1图纸基本幅面尺寸是()。
A.841*1189
B.594*841
C.420*594
D.297*420
参考答案:B
Whether you break the rules ____ or ____, you will not _____ with it.
A.by the accident, on purpose, get along
B.by accident, on the purpose, get out
C.by accident, on purpose, get away
D.by the accident, on the purpose, get away
引起传导性聋的常见后天性疾病不包括()
A.分泌性中耳炎
B.外耳道耵聍栓塞
C.梅尼埃病
D.鼓膜外伤
E.急、慢性化脓性中耳炎