哪个牙的近中面与邻牙近中面相接触() ["中切牙","尖牙","第三磨牙","第一磨牙","第二双尖牙"]
可用于测定生物样品中核酸含量的元素是() ["碳","氢","氧","磷","氮"]
下列哪项是监测口服香豆素类抗凝药物最佳指标() ["PT","微电泳法","F1+2测定","加钙凝血酶法","发色底物法"]
自然界游离核苷酸中,磷酸最常见是位于() ["戊糖的C-5’上","戊糖的C-2’上","戊糖的C-3’上","戊糖的C-2’上戊糖的C-5’上","戊糖的C-2’上戊糖的C-3’上"]
女患,31岁,2天前自觉上胸部酸痛,1天前出现双下肢发麻、无力伴尿潴留,病前1周有上呼吸道感染史。查体:脑神经未见异常,双下肢肌力0级,腱反射(-),双侧T10水平以下痛觉减退,双侧Babinski征(-)。首先应作的检查是() ["腰穿","脊髓造影","肌电图神经传导速度","磁共振","心电图"]
隔板在检修中需进行哪些测量和调整工作?