积聚病情演变中,常见病证有()
A.内伤发热
B.黄疸
C.吐血
D.水肿
E.胸痹
参考答案:A, B, C, D
如果一条直线垂直于平面内的:①三角形的两条边;②圆的两条弦;③平行四边形的一组邻边;④梯形的两腰,其中能说明直线与平面垂直的有______.(只填序号)
— Is your father or mother a teachers?
— . My father is a doctor and my mother is an office worker.
A.Both
B.Either
C.Neither
D.None