农药二厂甲类防爆区域是什么？
参考答案：农药二厂甲类防爆区域是灌装工段、混配工段。
数据进入传输信道之前必须把数据变换成适合信道传输的形式，这项工作由（）完成的。
A.调制解调器
B.放大器
C.调制器
D.均衡器
During a late stage of acquired immunodeficiency syndrome (AIDS), a client demonstrates signs of AIDS-related dementia. The nurse should give the highest priority to which nursing diagnosis（）
A. Bathing or hygiene self-care deficit.
B. Ineffective cerebral tissue perfusion.
C. Dysfunctional grieving.
D. Risk for injury.
