问题 单项选择题

下列钢筋代换规定中错误的是()。

A.钢筋代换后,应满足混凝土结构设计规范中所规定的钢筋间距、锚固长度、最小钢筋直径、根数等要求

B.对重要受力构件,如吊车梁、薄腹梁、桁架下弦等,不宜用HPB235级光面钢筋代换变形(带肋)钢筋,以免使用时裂缝宽度过大

C.对有抗震要求的框架,可以用强度等级较高的钢筋代替原设计中的钢筋

D.预制构件的吊环必须采用未经冷拉的HPB235级钢筋制作,严禁以其他钢筋代换

答案

参考答案:C

完形填空
The more accessible a company’s services are, the more business it will do. Why are the same ___1___ not applied when it comes to Internet websites then? A Hong Kong study has found that the local sites of two leading ___2___, McDonald’s and Motorola, are the most user-unfriendly of the 30 websites tested. The lack of ___3___ means they are not only losing customers, but ___4___ to meet their social responsibilities.
In an ever-more Internet-connected world, ___5___ are as important as physical shops or offices. They are ___6___ used as a way of banking, shopping and getting news. This is especially so for the disabled, who find it ___7___ to shop on-line than go to a store in person. A website that does not let them do this is the same as having a(n) "___8___" sign on a door. 
In Hong Kong, it is ___9___ not to provide the disabled with access to schools and buildings, but at present there are no specific laws on Internet accessibility. However, companies are morally responsible for ensuring that their websites can be ___10___ by people who are visually disabled or have difficulty walking around. Ideals for design have long been put forward by the World Wide Web Consortium, a global community working on open standards to ___11___ accessibility and development.
Computer technology is ___12___ fast and it is now much easier to create websites that are ___13___ for all people, sighted or disabled. Companies should ensure that the designers of their websites ___14___ guidelines for accessibility. We should try to make our city as ___15___ as possible, on-line and off.
小题1:
A.data B.principles C.experiences D.technologies
小题2:
A.companies B.products C.stores D.factories
小题3:
A.power B.study C.attractionD.access
小题4:
A.deciding B.attempting C.failing D.stopping
小题5:
A.computers B.hotlines C.signals D.websites
小题6:
A.increasingly B.possibly C.extremely D.randomly
小题7:
A.cheaper B.safer C.easier D.quicker
小题8:
A.waiting B.sale C.open D.closed
小题9:
A.unreasonable B.illegal C.unimportant D.impolite
小题10:
A.found B.read C.known D.created
小题11:
A.permit. B.discover C.start D.ensure
小题12:
A.weakening B.dropping C.changing D.flying
小题13:
A.wonderful B.usable C.harmless D.profitable
小题14:
A.follow B.write C.break D.ignore
小题15:
A.beautiful B.wealthy C.accessible D.respectable
单项选择题