如图所示,弹簧测力计测量范围是____________,最小分度值是____________,被测物重力是____________ N。
0-5N; 0.2N; 0.8
患者,男,25岁,因上前牙有黄黑斑块要求治疗。检查:双侧上前牙唇面有黄褐色斑块,无缺损,表面光滑,质硬,探(-),叩(-),无松动,冷测反应正常,诉当地乡亲中亦有相似情况。最可能的诊断是()
A.浅龋
B.四环素牙
C.静止龋
D.釉质发育不全
E.氟牙症
Of course,we must work hard._______,we should learn to take good care of ourselves. [ ]
A. Therefore
B. In a word
C. As a result
D. Meanwhile