寻址法
参考答案：
用于识别网络中用户位置的方式。理想上，寻址法是说明用户位于何处，而不是说明他们是谁（姓名），或如何到达该处（路由）。
当药物在体内吸收和消除达平衡时的血药浓度称为
A．药物半衰期B．血药浓度峰值C．生物利用度D．药物有效期E．药物的分布
A (71) is a data type whose major attributes are determined by the rules governing the insertion and deletion of its elements. The only element that can be deleted or removed is the one that was inserted most (72) . Such a structure is said to have a last-in/first-out (LIFO) behavior, or protocol.
A．stack
B．queues
C．pointer
D．record
