【简答题】图(a)所示减速系统由直齿圆锥齿轮、斜齿圆柱齿轮传动所组成。试按作用在同一轴上的两啮合分力方向相反的要求,确定并标注: (1)两个斜齿圆柱齿轮的螺旋线方向; (2)各轴转向; (3)齿轮2所受各啮合分力的方向。
【简答题】关于标准化的管理原理的论述,正确的是() A结构状态良好的系统,不会由于外部环境的变化而向无序方向演化 B实践证明,标准系统的效应是多个标准系统互相协同的结果,这个效应低于标准个体效应的总和 C标准系统的存在和发展,仅仅依赖于其内部要素的互相作用 D在对标准系统实施的过程中,应不断协调彼此的关系,及时发现结构的不合并加以调整 E标准系统同环境的联系表现在它和环境之间的物质和信息的不断交换过程中
【简答题】阅读理解。 On my first trip in the United States, I went to San Antonio. I was on foot. So I went to only three places there: the Alamo, the River Walk, and the Art Gallery. I especially enjoyed visiting t...
【简答题】运用矛盾的普遍性与特殊性的关系的原理,阐明马克思主义的普遍原理与中国实际相结合的道理。
【单选题】听力原文: IRAN The Guardian Council said Friday that it had found no significant violations after 10 days of investigating the disputed June 12 presidential election. All three defeated candidates have pr...
A.
Rioters should be executed.
B.
There was no fraud in the election.
C.
More than 17 people died in the violence.
D.
Thousands of Iranians had visited Tehran's main cemetery.
【简答题】Mr. Smith hoped that his daughter would continue her education to acquire still another degree, and he expressed his wish in a letter to her. (wish) In a letter to his daughter, Mr. Smith expressed hi...
【单选题】My first trip on the ocean and my first voyage in a steamboat was to____.
【简答题】On my first trip in the United States , I went to San Antonion . I was on foot . So I went to only three places there : the Alamo , the River Walk , and the Art Gallery . I especially enjoyed visiting...