注册结构工程师注册有效期为（）年。 A.1 B.2 C.3 D.5

通常是将被测物和与其结构类似的化合物或其他与其共存的物质混杂,然后测定被测物,证明该方法不受影响

A．精密度
B．准确度
C．检测限
D．专属性
E．耐用性

Group Tours of the Area of the 2012 Sites

These are recommended tours for groups. Individual visitors wishing to join please click here.

East London and the Olympic Park Tour

From Central London, travel through London’s East End — recently fashionable, multicultural residential areas, and once famous for market gardens, fine churches, and shipping-related industries. Hear a little of the dark side with stories of Jack-the-Ripper and street gangs.

Now into the 21st century, you arrive at the Olympic Park, already under construction. Imagine the 80,000-seat Main Stadium, the Multi-Sports Arena, Aquatics Centre, Velodrome, Olympic Village, Broadcasting & Media Centre and Stratford City.

For those who have a whole day in which to see East London we recommend a morning East London and Olympic Park tour combined with an afternoon Olympic Greenwich tour.

2012 Sites Tour

The tour starts in Stratford where you view the work in progress on the Olympic Park.

Hear the history of London’s Royal Docks, as you travel to the Boxing, Judo, Weightlifting, Wrestling, Table Tennis and Taekwondo venue. View the O2 Arena. See the new London City Airport, Thames Barrier Park, University of East London, new waterside apartments and smart hotels.

For those who have a whole day in which to see 2012 Olympic London we recommend a morning 2012 Olympic Sites tour combined with an afternoon 2012 Olympic Greenwich tour.

2012 Greenwich Tour

Greenwich will host 6 Olympic events.Your tour of Greenwich will include the Greenwich Park, where the equestrian events will take place.

Cross the Meridian Line to see the large buildings at Woolwich. Finally, we can show you the exciting developments taking place on the Greenwich Peninsular, which will be hosting a number of Olympic events.

小题1:What can be learnt from the passage?

A．London’s Olympic Park is being built.

B．London’s East End hasn’t changed much.

C．More than 6 Olympic events will take place in Greenwich.

D．No events will be hosted on the Greenwich Peninsular.小题2:Which of the following is not included in 2012 Sites Tour?

A．Hear the history of London’s Royal Docks.

B．View the O2 Arena.

C．See the new London City Airport.

D．Cross the Meridian Line.小题3:If you want to visit the place where the equestrian events will take place, which tour will you choose?

A．East London and the Olympic Park Tour

B．2012 Sites Tour

C．2012 Greenwich Tour

D．Olympic Park Tour

坐标镗床上所镗孔的孔距精度就是该机床的定位精度。

简述公共政策的基本功能。

萃取生产过程中出现相界面污物或水相出现沉淀物会有什么危害？应如何处理？