连接上颌切牙的切缘、尖牙的牙尖、前磨牙颊尖及磨牙近远中颊尖的连线
A．纵抬曲线B．横抬曲线C．Spee曲线D．补偿曲线E．颌曲线
参考答案：D
The driver was at ______ loss when ______ word came that he was forbidden to drive for speeding. [ ]
A. a; /
B. /; /
C. the; the
D. a; the
铁烧结矿技术指标高碱度烧结矿一级品的转鼓指数标准是（）。
A.≥63%
B.≥66%
C.≥70%
e for speeding. [ ]