以下所列项目不属黑色主病范围者为（）
A.寒证
B.气滞
C.痛证
D.瘀血
E.肾虚
参考答案：B
牙轮钻头的密封轴承的基本结构包括①（）②（）③（）；④压力补偿器。
According to the periodic table, still some elements undiscovered.
A．there seem to be
B．it seems to be
C．it seems that
D．here seem
