题目内容
狂犬病、艾滋病、病毒性肝炎三者有哪些共同点？
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以下不是软件工程要素的是（ ）。
a set of printed pages that are fastened inside a cover so that you can turn them and read them：（） a person whose job is teaching, especially in a school: () a person who has been trained in medical science, whose job is to treat people who are ill or injured:() a road vehicle with an engine and four wheels that can carry a small number fo passengers: () things that people or animals eat: () a liquid without colour, smell or taste; it is in lakes, rivers and seas, and is used for drinking, washing, etc.: () a piece of wood, glass, etc. that is opened and closed so that people can get in and out of a room, building, car, etc.: () an instrument made of plastic or metal used for writing with ink: () an opening in the wall or roof of a building, car, etc., usually covered with glass, that allows light and air to come in and people to see out: () a female child
常用的离合器分为()两种类型
谐波齿轮减速器的特点有哪些()
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