在每天开始工作之前，应由指定的井场监督实行日常检查，应包括但不限于的检查项目（）。

用适当的方法解下列方程

（1）（3x﹣1）²=（x+1）²

（2）x²﹣2x﹣3=0

（3）x²+6x=1

（4）用配方法解方程：x²﹣4x+1=0．

面对严峻的就业形势，我国政府制定和实施了一系列稳定和扩大就业的政策措施，包括扩大内需拉动就业、减轻企业负担稳定就业、政策扶持鼓励创业、加强职业技能培训提升就业等。

根据材料，对我国政府制定和实施稳定和扩大就业的举措做出价值评价。(12分)

雌激素的生理作用包括下列哪一项()

A．降低妊娠子宫对缩宫素的敏感性

B．使子宫内膜增生

C．使宫颈粘液减少变稠，拉丝度减少

D．使 * * 上皮细胞脱落加快

E．以上都不是

腰椎间盘突出症的体征有（）

A.脊柱侧凸，可凸出健侧或患侧

B.突出间隙的棘突旁可有压痛，并向同侧臀部及坐骨神经方向放射

C.直腿抬高试验和加强试验阳性，跟臀试验阳性

D.小腿前外侧、足背内侧，拇趾背伸肌力减弱，可初步判定为L椎间盘突出

E.咳嗽或用力时可使症状加重

When Melissa Mahan and her husband visited the Netherlands, they felt imprisoned by their tour bus. It forced them to see the city according to a particular route and specific schedule--but going off on their own meant missing out on the information provided by the guide. On their return home to San Diego, California, they started a new company called Tour Coupes. Now, when tourists in San Diego rent one of their small, brightly coloured three-wheeled vehicles, they are treated to a narration over the stereo system about the places they pass, triggered by Global Positioning System (GPS) satellite technology.

This is just one example of how GPS is being used to provide new services to tourists. "What we really have here is a technology that allows people to forget about the technology," says Jim Carrier of IntelliTours, a GPS tourism firm which began offering a similar service over a year ago in Montgomery, Alabama. The city is packed with sites associated with two important chapters in American history, the civil war of the 1860s and the civil-rights movement a century later. Montgomery has a 120-year-old trolley system, called the Lightning Route, which circulates around the downtown area and is mainly used by tourists. On the Lightning Route trolleys, GPS-triggered audio clips point out historical hotspots.

Other firms, such as CityShow in New York and GPS Tours Canada in Banff, Canada, offer hand-held GPS receivers that play audio clips for listening to while walking or driving. In South Africa, Europcar, a car-rental firm, offers a device called the Xplorer. As well as providing commentary on 2 000 points of interest, it can also warn drivers if they exceed the local speed limit.

If such services prove popular, the use of dedicated audio-guide devices could give way to a different approach. A growing number of mobile phones have built-in GPS or can determine their locations using other technologies. Information for tourists delivered via phones could be updated in real time and could contain advertisements. "Location-based services", such as the ability to call up a list of nearby banks or pizzerias, have been talked about for years but have never taken off. But aiming such services at tourists makes sense--since people are more likely to want information when in an unfamiliar place. It could give mobile roaming a whole new meaning.

Which of the following is true of the text（）

A. Location-based services are popular in many fields

B. Europcar offers hand-held GPS receivers

C. CityShow offers a service similar to IntelliTours

D. Xplorer can warn drivers when they offend