【判断题】边际效用为零时总效用最大,边际效用小于零时,总效用开始减少。
【判断题】当边际效用为正时,总效用上升;边际效用为零时,总效用达到最大;当边际效用为负时,总效用下降。
【判断题】边际效用为正时,总效用增加;边际效用为零时,总效用最大;边际效用为负时,总效用递减。
【简答题】Microbiology has not only made important contributions to many disciplines but also affected both medicine and pharmacy a lot. Medical microbiology is the study of the pathogenic microbes and the role...
【单选题】精力旺盛、表里如一、刚强、易感情用事,属于以下哪种气质。( )
【简答题】阅读理解。 The food we eat seems to have a great effect on our health. Although science has made big steps in food more fit to eat, it has, at the same time, made many foods unfit to eat. Some resea...
【单选题】“精力旺盛、表里如一、刚强易感情用事”属于()
【单选题】输液过程中巡视发现墨菲滴管内液面过高,正确的处理是
C.
取下输液瓶并倾斜,使瓶内针头露出液面,滴管内液面降至所需高度时继续输液
D.
夹闭滴管下端输液管,用手挤压墨菲滴管,将药液挤入输液瓶使液面降至所需高度