x-1≥1①2x-(x-1)≤5②，
由①得：x≥2，
由②得：x≤4，
不等式组的解集为：2≤x≤4．
通常三环类抗抑郁药物的每天治疗剂量为
A．50mg
B．50～70mg
C．75～100mg
D．150～300mg
E．300～400mg
For a client in addisonian crisis, it would be very risky for a nurse to administer
A．potassium chloride.
B．normal saline solution.
C．hydrocortisone.
D．fludrocortisone.
