问题 单项选择题

某大型商厂主楼20层,地下1层,占地面积为3000m2,建筑总面积60000m2,其中地下室面积3000m2,本工程地下室采用钢筋混凝土结构,底板为C30防渗钢筋混凝土,外墙采用C40防渗钢筋混凝土,施工缝用BW91型止水带,防水采用内防水;该工程施工过程中,该混凝土强度经测试论证达不到要求;竣工后,经区质量监督站核定达不到合格等级,经法定检测单位检测,该墙内混凝土强度不满足设计要求。

悬挑长度为2m,混凝土强度为C40的现浇阳台板,当混凝土强度至少应达到()时方可拆除底模板。

A.70%

B.100%

C.75%

D.50%

答案

参考答案:B

多项选择题 案例分析题
阅读理解

                                                                              A

Everywhere I go, people are speaking on their cell telephones regardless of their surroundings (环境) . This happens when people are walking around a lake or through town, or even driving. I have even seen a person attempting to speak on her cell phone while ordering ice cream at Dairy Queen, thus speaking to two people at once.

As the over-spending of technology increases, people begin to take less joy in the simple pleasures of life—joys that don’t cost money—from observing clouds, playing with children to thinking or reading. And it is not just telephones that take the responsibility; too much value is placed on items (物品) from computers to cars. Many things are purchased (购买) merely(仅仅) to show off. Do you really need a cell phone that plays games, shows movies and takes pictures? No, cell phones should be purchased to use in urgent situations.You do not need to use your telephone when you are at someone else’s house or in a restaurant.

Technology and possessions (财产) do not bring joy. While some technology is necessary, it can get ridiculous(可笑的). Each possession just makes us want more, while simple pleasures can be enjoyed now and then.

Instead of spending our time buying a third television or looking into the newest cell phone models, we should be acting more productively to improve the world by volunteering, for example. Or, we should reconsider playing computer games or taking pictures on our cell phones and read a book or imagine what shapes the clouds are in the sky instead.

小题1:The author mentions cell phones at the beginning just to show _________.

A.they can be used on any occasion.

B.people manage to speak to two at a time.

C.they can put drivers in great danger.

D.people are fond of personal items.小题2:People have less joy of simple life nowadays mainly because they _________.

A.focus on technology and their belongings.

B.use cell phones in less urgent situations.

C.buy private cars just to show off.

D.place too much value on computers.小题3:We can infer that ________.

A.people have no time to play with their children.

B.we can take pleasure in using cell phones at any time.

C.people always desire more possessions.

D.we depend on volunteers to develop the world.