Like other animals, we need a territory of our own. The territory should be large and comfortable enough for us to relax and restore our energies.
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The gift should be a sense of wonder. it is so indestructible that it will last throughout life.
There is an almost infinite variety of magazines that are available to satisfy the rich variety of interests and tastes.
It takes years of constant academic toil to reach a level of sophistication which is essential to function effectively in today's very complex world.
不属于室性期前收缩的心电图特点的是?
A. 提前出现的宽大QRS波
B. 宽大QRS波前无P波
C. 其T波方向与QRS主波方向相反
D. 代偿间期不完全
E. QRS波时间>0.12s