A.1/2,0
B.4/7,1/2
C.4/7,0
D.4/5,-1
[单选题]A.1500N·cm,顺时针方向B.1500N·cm,逆时针方向C.D.
[单选题]A.1/2,0B.4/7,1/2C.4/7,0D.4/5,-1
[单选题]A.1/2,0B.4/7,1/2C.4/7,0D.4/5,-1
[单选题]A.1/2,0B.4/7,1/2C.4/7,0D.4/5,-1
[单选题]A.1/2,0B.4/7,1/2C.4/7,0D.4/5,-1
[单选题]A.15°B.30°C.45°D.60°E.75°
[单选题]A.根尖囊肿B.球上颌囊肿C.正中囊肿D.鼻唇囊肿E.鼻腭囊肿
[单选题]A.足量抗生素B.支持疗法C.对抗疗法D.应早期广泛切开E.输新鲜血
[单选题]A.舌动脉B.面动脉C.甲状腺上动脉D.颌内动脉E.颞浅动脉