题目内容
如下图，正方体ABCD-A1B1C1D1中，M是DD1的中点，O是底面正方形ABCD的中心，P为棱A1B1上任意一点，则直线OP与直线AM所成角的大小等于_____。
查看答案
搜索结果不匹配？点我反馈
更多问题
如何指导幼儿游戏？
（66） data effectively is crucial for success in today’s competitive environment.Managers must know how to use a variety of tools. Integrated data takes information from different sources and puts it together in a meaningful and useful way. One of the difficulties of this is the （67） in hardware and software. （68） integration uses a base document that contains copies of other objects. （69） integration uses a base document that contains the current or most recent version of the source document it contains.（70） provides an overview of the program written in “plain” English,without the computer syntax. （69）处填（）。
Traditional structured analysis techniques focus upon the flow of （71） within a system. Object-oriented analysis emphasizes the building of real-world models. It examines requirements from the perspective of the classes and objects found in the vocabulary of the （72） domain. Traditional system design method emphasizes the proper and effective structure of a complex system. Object-oriented design method encompasses the process of object-oriented decomposition and a （73） for depicting both logical and physical as well as static and dynamic models of the system under design. Object-oriented programming is a method of implementation in which programs are organized as cooperative collections of objects, each of which represents an （74） of some class, and whose classes are all members of a hierarchy of classes united via （75） relationships. （72）处填（）。
你怎么看“打官司，找关系”的现象？
微信支付 
支付宝支付