观察法的优点是() ["省钱、省时、省力","科学性和客观性较强","一般不涉及伦理问题","能收入到较深入的信息","被观察者可能有意改变行为"]
()不是护理伦理学的基本原则 ["不伤害原则","知情同意原则","尊重原则","公正原则","有利原则"]
与有线局域网相相比,()的特点有安装便捷、使用灵活、经济节约和易于扩展。 ["以太网","无线局域网","资源子网","通信子网"]
呼吸衰竭患者CO2储留的皮肤粘膜征象是()? ["皮肤潮红","皮肤潮湿","皮肤温暖","眼球结膜充血水肿","双下肢浮肿"]
简单分组和复合分组的区别() ["A、分组标志是品质标志还是数量标志 ","B、选择分组标志的数量 ","C、分组数目的多少 ","D、所用的统计表是简单表还是复合分组表"]
药物避孕(激素避孕)