当蓄电池液面降低时，在补充充电前应添加电解液至规定高度。
The listener uses dynamic information about the database and instance it has received through service registration before using information statically configured. Some services such as heterogeneous services and external procedures require the use of information statically configured within listener.ora. In order to support this， which tool could be used to configure the listener statically？（） ["Oracle Net Manager","Listener Control Utility","Oracle Net Control Utility","Oracle Net Configuration Assistant"]
知道了“长方形的四个顶角都是直角”，而正方形只是长方形的一个特例，那很容易理解“正方形的四个顶角都是直角”。这种同化模式属于（） ["上位学习","下位学习","组合学习","推理学习"]
一级护理管理的护理对象是（） ["自伤自杀者","伴一般躯体疾病者","生活不能自理者","木僵、拒食者","拒食、外走者"]
安全色中的（）表示提示安全状态及通行的规定。 ["黄色","蓝色","绿色"]
简述客户关系管理系统实施。
