在圆中有结论“经过圆心的任意弦的两端点与圆上任意一点（除这两个端点外）的连线的斜

制氧站站房中，空分设备的吸气口离地面的垂直高度必须（）m。

A．大于10

B．小于10

C．大于5

D．小于5

三、阅读（共两节, 满分40分）

第一节阅读理解（共15小题；每小题2分, 满分30分）

阅读下列短文, 从每题所给的A、B、C和D选项中, 选出最佳选项, 并在答题卡上将该项涂黑。

When John Milton , writer of “Paradise Lost” ,entered Cambridge University, in 1625, he was already skilled in Latin after seven years of studying it as his second language at St. Paul’s School, London. Like all English boys who prepared for college in grammar schools ,he had learned not only to read Latin but also to speak and write it smoothly and correctly .His pronunciation of Latin was English ,however ,and seemed to have sounded strange to his friends when he later visited Italy.

Schoolboys gained their skill in Latin in a bitter way. They kept in mind the rules to make learning by heart easier. They first made a word-for-word translation and then an idiomatic translation into English .As they increased their skill ,they translated their English back into Latin without referring to the book and then compared their translation with the original .The schoolmaster was always at hand to encourage them. All schoolmasters believed Latin should be beaten in.

After several years of study ,the boys began to write compositions in imitation of the Latin writers they read. And as they began to read Latin poems ,they began to write poems in Latin .Because Milton was already a poet at ten ,his poems were much better than those painfully put together by the other boys. During the seven years Milton spent at university ,he made regular use of his command of Latin. He wrote some excellent Latin poems ,which he published among his works in 1645.

56．What does the passage mainly tell about?

A．How John Milton wrote “Paradise Lost”.B．How John Milton studied Latin.

C．How John Milton became famous.  D．How John Milton became a poet.

57．Which of the following is true of John Milton’s pronunciation of Latin?

A. It has a strong Italian accent.         B. It has an uncommon accent.　　

C. It was natural and easy to understand.　D. It was bad and difficult to understand.

58．It can be inferred from the passage that        .

A．Milton’s training in Latin was similar to that of the other boys

B．Milton hadn’t learned any foreign language except Latin before going to college

C．Milton’s Italian friends helped him with Latin when talking

D．Milton’s classmates learned Latin harder but worse than Milton.

59．Which of the following is suggested in the passage?

A．The schoolmaster mainly helped those who were bad at Latin.

B．The schoolmaster usually stood beside the schoolboys with a stick in his hand.

C．The schoolboys could repeat Latin grammar rules from memory.

D．Some of the schoolboys were quick at writing compositions in Latin.

60．What is the meaning of the underlined part “Latin should be beaten in” (Para.2)?

A．Schoolboys should be punished if they were lazy to learn Latin.

B．Schoolboys should be encouraged if they had difficulty in learning Latin.

C．Schoolboys were expected to master Latin in a short time.

D．Schoolboys had to study Latin in a hard way.

案情：2005年1月15日，某市公安局的执法人员到个体户刘利民的工厂进行检查，发现有多处不符合消防安全标准，如通道狭窄、消防器材上堆放货物等。对此，公安局消防安全处的工作人员作了消防安全检查记录，并提出“限7天改进，罚款人民币5000元”的处理意见，刘利民当场签了字。工作人员当天扣留了刘利民的“消防安全合格许可证”。1月17日，消防安全处对刘利民作出了第82号行政处罚决定书，并于当天送达刘利民。刘在1月18日向市公安局消防安全处缴纳罚款5000元。7天后，消防安全处派人到刘利民的加工厂进行检查，仍认为不符合要求，消防安全合格许可证仍未发还给刘利民，要求刘利民两天内改进。1月25日，消防安全处两次派人到刘利民的加工厂去检查时，发现刘利民的加工厂上锁，便派人通知刘利民第二天同去加工厂检查改进情况，刘以“没有时间”拒绝前往。而且刘利民认为市公安局消防安全处的行政处罚对事实的认定不准确，处罚过重，扣留消防安全合格许可证没有法律依据，于是向市政府申请复议，要求撤销市公安局的行政处罚决定，退还罚款，赔偿因扣留消防安全合格许可证而造成的损失。但复议机关作出了维持原处罚决定的复议决定。
问题：

据查，扣留刘利民消防安全合格许可证的法律依据是该省人大常委会通过的一个立法文件，则该扣留行为是否合法为什么

电渣焊的类型有哪些？

已知：某公司2004年销售收入为3000万元，销售净利润率为8%，净利润的70%分配给投资者。2004年12月31日的资产负债表（简表）如下：

该公司2005年销售净利率和利润留存率保持2004年的水平，计划销售收入比上年增长40%。为实现这一目标，公司需新增设备一台，价值148万元。据历年财务数据分析，公司流动资产和流动负债随销售额同比例增减。

该公司2005年增加的留存收益为（）。

A．200.8

B．100.8

C．235.2

D．246