铸造牙合支托的长度为() ["双尖牙近远中径的1/4","双尖牙近远中径的1/2","磨牙近远中径的1/2","磨牙近远中径的1/3","磨牙近远中径的1/4"]
良性子宫平滑肌瘤也可以发生转移,其最常见的转移部位是() ["肺","后腹膜","纵隔淋巴结","软组织","骨"]
特应性皮炎发病中,吸入性变应原包括() ["动物毛","花粉","真菌","屋尘","以上都是"]
目前临床上主要采用的牙种植体为() ["黏膜内种植体","骨膜下种植体","骨内种植体","根管内骨种植体","以上均不是"]
小儿麻醉中即使已行气管内插管仍有可能发生呼吸道梗阻,主要是因为()。 ["气管导管过粗","气管导管过细","导管插入过深","黏稠分泌物在气管导管内结痂","气管导管固定不佳"]
何谓Rh血型?其鉴定方法有哪些?