【单选题】从将图腾命名为自己氏族的名字的角度,可以将图腾崇拜视为一种()制度。
【单选题】If profit and money are your first ______ , and commitment to people your least concern, you have failed education.
【单选题】The first time for everything is always the most exciting one. _____ it is your first day in a new job or going on a first date, you will always remember those 'first' times. [ ]
【简答题】系统稳定的充分与必要条件是:系统所有特征根的实部( ),即其特征方程的根都在s左半平面。
【多选题】姓,是氏族的图腾,来自母系氏族社会,姓是区分氏族的标志性符号,其功能是“___________”;氏,来,是身份的标志,来自父系氏族社会,氏是由姓衍生出来的产物,其功能是“___________”。从父系氏族社会到先秦这一阶段,形成了“___________,___________”的社会局面。在春秋时期,姓与氏两个概念开始融合混用,直到___________时期,姓与氏真正合二为一,不再区分。
【单选题】If profit and money are your first ______, and commitment to people your least concern, you have failed education.
【判断题】系统稳定的充分必要条件是:闭环系统特征方程式的所有根均具有负实部。