一种药物的毒性反应或副作用，能被另一种药物减轻或消除，称为( )
A．相使
B．相畏
C．相杀
D．相恶
E．相反
参考答案：B
A client with rheumatoid arthritis has been taking large doses of aspirin to relieve her joint pain. The nurse should assess the client for which important symptom of aspirin toxicity
A．Chest pain.
B．Drowsiness.
C．Dysuria.
D．Tinnitus.
将多台PC机组成以太局域网，需要一些连接设备和传输介质。下面哪个设备或介质是不需要用到的______
A．网卡
B．集线器
C．网线和接头
D．调制解调器
