一个三角形两边长为5和7，且有两边长相等，这个三角形的周长是______． 发布时间：2017-04-13 19:09 │ 来源：www.tikuol.com 题型：填空题 问题： 一个三角形两边长为5和7，且有两边长相等，这个三角形的周长是______．
题型：填空题 短文填空：选择恰当的单词填空，每词限用一次。（有两个多余的选项） when their even feel behave or modern hours speak classical Where did you go yesterday? Did you hear music at any of these places? Today most stores and restaurants play music. You might even hear music in an office 1_______ on a farm. Scientists believe that music influences the way people 2_______. According to some scientists, the sound of western classical music (Mozart and Bach) makes people 3_______. richer. When a restaurant plays classical music, people spend more money on food and drinks .When the restaurant plays 4_______ music, people spend less money .With no background music, people spend 5_______ less. Scientists also believe that loud, fast music makes people eat faster. People actually chew 6_______ food faster when the music gets faster .Some restaurants play fast music during their busy 7_______.This gets people to eat faster and leave quickly .Restaurants can make more money this way. Some scientists think that makes you think and learn better. They say that music helps students to be more alert. It is true that people learn better 8_______ they are relaxed. And listening to music can help you relax. The next time you hear music somewhere, be careful. It might change the way you behave. 查看答案
题型：填空题 关于主要债券收益：利息收入、利息的再投资收入和资本利得收益三者关系，说法正确的是（）。A.利率上升时，利息的再投资收益会增加B.利率上升时，也会有资本利得C.利率风险和再投资风险是同向变化的D.利率下降时，就会有资本利得损失 查看答案
题型：填空题 某滨海城市一建筑工程，施工时正遇台风多雨季节，为了保质保量完成施工任务，项目部制订了安全文明保障措施，落实了防火措施，主要部位设置了安全警示标志牌，并加强了高空作业人员的安全教育。安全员在检查时，发现雨天地下室用电不符合要求，临时消防水管不符合要求。本建筑工程安装临时消防竖管，其管径要求最小不得小于( )mm。A．25B．35C．50D．75 查看答案