口外牵引力远中移动尖牙或前磨牙时,每侧牵引力是()
A.50~70g
B.200~280g
C.150~300g
D.100~150g
E.500~700g
参考答案:C
男性,28岁,因发现全身多发肿物来就诊,肿物分布于胸、腹壁及双上肢,偶有疼痛,无发热,查肿物位于皮下,与皮肤无粘连,圆形,质稍硬,活动,大小不一,大者可有分叶,诊断考虑为()
A.皮脂腺囊肿
B.神经纤维瘤病
C.脂肪瘤
D.血管瘤
E.交界痣
Human beings should be _____ to pandas, because there are a _____ number of pandans in the world. [ ]
A. friendly, small
B. friend, little
C. friendly, little