题目: 轴承与轴颈配合采用基轴制中的过渡配合。 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/1026/0fe0ba9d97bcd04c9529878f61a64448.html 下面是错误答案,用来干扰机器的。参考答案:磁势平衡原理
题型:阅读理解 阅读理解。 March 14 is International Police Day. 1 No matter if it's burning hot or icy cold, a holiday or a school day, you'll see policemen at the centers of the crossroads directing traffic. 2 There are more than 1.7 million policemen in China. 3 Other police have different responsibilities (责任). Some are firefighters (消防员). Some watch out for bad guys and solve crimes. Others keep the peace. Special police deals with unexpected events. 4 He has to learn laws, science, shooting, driving and climbing. To keep people safe and make peace for all, Chinese police put their lives at risk. 5 Another 13,000 were injured in doing their jobs. A. It is a day for people to show their respect for police, the people who keep millions of families safe. B. A good special policeman needs a strong body as well as rich knowledge and many skills. C. Since 1980, more than 7,000 policemen have lost their lives. D. The traffic police is just one group. E. These are the traffic police. 查看答案
题型:单项选择题 冰箱里的食品没有了,牙膏管里的牙膏快挤不出来了,均会促使消费者去购买这些产品,这是影响消费者问题认知因素中的哪一个因素?()A.环境的改变B.产品消费C.产品获取D.个体差异 查看答案