During his life time, Edison ______ 1093 inventions.[ ]
A. worked
B. made
C. did
D. gave
答案:B
上颌右第二乳磨牙近中邻面深龋穿髓,经根管治疗后,宜采取的治疗方法是()。
A.金属全冠
B.金属嵌体
C.树脂全冠
D.塑料全冠
E.牙体充填术
影响血氧读数的准确性的原因不包括()。
A.者躁动
B.部光源干扰
C.体颤抖
D.趾
E.磁波干扰