【单选题】下列哪项不属于苏联学前儿童数学教育的特点?
【单选题】卵石、碎石的出厂检验项目为:松散堆积密度、颗粒级配、含泥量、泥块含量、();
【简答题】三. Choose an appropriate word or phrase in its correct form to complete each sentence. A、old ; elder; elderly 1. She is an _________ friend of ours. 2. I was much happier in my ________ job. 3. Mary o...
【单选题】Whether these sentences are facts or opinions, make your choices. 1.But only Charlie Chaplin could have created the great comic character of “the Tramp”, the little man in rags who gave his creator pe...
【简答题】Complete each of the following phrase according to the Chinese equivalent in the brackets.
【简答题】用二分法求方程 x 2 -x-2=0 在 [0 , 3] 间的解,要求精度不超过 10 -5 。 算法提示: 先取二元方程 f(x) 的两个初略解 x1 和 x2 ,若 f(x 1 ) 与 f(x 2 ) 的符号相反,则方程 f(x)=0 在 [x 1 , x 2 ] 区间至少有一个根;若 f(x) 在 [x 1 , x 2 ] 区间单调,则至少有一个实根;所以取 x 3 =(x 1 +x 2 )...
【单选题】方程 -x-1=0至少有一个根的区间是()