下列哪项不是乳牙滞留的原因A.乳牙根吸收不足 B.乳牙根尖周病变破坏牙槽骨使恒牙早萌而
下列哪项不是乳牙滞留的原因
A.乳牙根吸收不足
B.乳牙根尖周病变破坏牙槽骨使恒牙早萌而乳牙滞留
C.恒牙牙胚位置远离乳牙牙根
D.恒牙先天缺失
E.乳牙外伤
下列哪项不是乳牙滞留的原因
A.乳牙根吸收不足
B.乳牙根尖周病变破坏牙槽骨使恒牙早萌而乳牙滞留
C.恒牙牙胚位置远离乳牙牙根
D.恒牙先天缺失
E.乳牙外伤
第3题
B.A large pan of boiling water contains as much heat as a smaller pan of boiling water.
C.The temperature of a large pan of boiling water is higher than that of a smaller pan of water.
D.The temperature of a large pan of boiling water is lower than that of a smaller pan of water.
第4题
炒盘的英文是()。
A.Frying pan
B.Omelet Pan
C.Saute Pan
D.Sauce pan
第6题
A.PE>PP>PVC>PAN
B.PE>PP>PAN>PVC
C.PP>PE>PVC>PAN
D.PAN>PVC>PP>PE
第7题
A.PE>PP>PVC>PAN
B.PE>PP>PAN>PVC
C.PP>PE>PVC>PAN
D.PAN>PVC>PP>PE
第8题
A.PE~PP>PVC>PAN
B.PE>PP>PAN>PVC
C.PP>PE>PVC>PAN
D.PAN>PVC>PP>PE
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