某礼堂，建筑高度23米，设置1400个座位。礼堂东侧有一住宅楼，建筑高度20米。礼堂与住宅楼相邻一侧设有防火门窗。两建筑物耐火等级均为一、二级。
问：（1）礼堂与住宅楼之间的防火间距如何确定？
（2）礼堂观众厅安全出口的数目如何确定？
（3）在观众厅中布置疏散走道时，走道净宽度应满足什么要求？
参考答案：
（1）礼堂与住宅楼的间距不应小于6米，但当礼堂与住宅楼西侧设有防火门窗时，防火间距可适当减少，但不应小于3.5米。
（2）每个安全出口平均疏散人数不应超过250人，1400/250=5.6，因此，观众厅安全出口的数目不能少于6个。
（3）走道宽度应按通过人数每100人不小于0.6米计算，但最小净宽度不应小于1.0米，边走道不应小于0.8米。
阅读并排序 下面的短文由六个段落组成，开头和结尾已给出，其余的四个段落均是随机排列的。请根据段落之间的逻辑关系，用字母A、B、C、 D重新排列这四个段落的顺序，使短文通顺。
小题2:His father died when he was just 12 years old and Clemens then went to work for a printer to help support his family. He traveled around, and worked in many different cities. 小题3:In 1865,Clemens wrote a story about a jumping frog with his pen-name. The story and the writer became famous. After that, he wrote many books, including The Adventures of Tom Sawyer. It was published in 1876. He also gave many lectures, and became a very famous and popular man. 小题4:Clemens moved around the USA on the steamboat, and tried several jobs. He was a soldier, and a silver miner. And then he started working as a writer for a newspaper. At this time, he decided to use a pen-name for his stories, and he chose the name "Mark Twain". Samuel Clemens died in 1910. He is considered to be one of the greatest writers in American history |