（）是使用电磁能和定向能控制电磁频谱或攻击敌军的任何军事行动。
A、心理战
B、网络战
C、媒体战
D、电子战
参考答案：D
气血虚头痛宜选方（）
A.吴茱萸汤
B.八珍汤
C.大补元煎
D.天麻钩藤饮
E.羌活胜湿汤
The nurse is providing care for a postoperative client who has undergone a small bowel resection. The nurse may use an epidural catheter for which of the following ？（）
A．Antibiotic therapy.
B．Pain management.
C．Blood transfusion.
D．Anticoagulation.
