早产儿使用铁剂预防贫血起始的月龄是()
A.1个月
B.2个月
C.3个月
D.4个月
E.5个月
参考答案:B
解析:对早产儿,尤其是非常低体重的早产儿宜自2个月左右给予铁剂预防。
磁盘盘体内部是无尘洁净的,不是真空的。
Which of the following indications is the primary use for electroconvulsive therapy (ECT) ()
A. Severe agitation.
B. Antisocial behavior.
C. Noncompliance with treatment.
D. Major depression with psychotic features.