我国旅行证有两种，入出中国国境一年一次有效和两年多次有效。

[单选题]白斑（　　）。

[问答题]Passage 3Tidal Power on the Cheap?　　A  The startup, located on the Orkney Islands, way north of Scotland, has raised ￡6.2 million to build a working prototype of a floating tidal turbine that it says will be cheaper to install and maintain than others being tested now. The 8-meter-long prototype, ideally, will go into the water at the European Marine Energy Centre (EMEC) Tidal Test Site that sits just down the road from ScotRenewables in 2010. Commercial versions of the turbine will measure up to 40 meters long and weigh 250 tons, but generate 1.2 megawatts of power.　　B  “That’s quite impressive when you compare it to others,” said CEO Barry Johnston. “We want to be competitive with offshore wind.” Rather than anchor a permanent turbine on the ocean floor, ScotRenewables will build a floating turbine that is slack moored with chains to an anchor on the sea floor. The body of the turbine-a long 40-meter tube of metal with a point at the end-will face directly into the tide. Below, two turbines attached to fins will convert the power of the tides into electricity. Johnston explained “A 1-meter prototype ScotRenewables is experimenting with in the wave tank is built. It looks like a model rocket with two fins with propellers attached to the ends of the fins.”　　C  Tidal is the potentially most predictable, reliable form of renewable energy. With a tide table and computer, ScotRenewables can calculate the power output of a turbine decades in advance. You can’t do that with intermittent, variable sources like wind, solar or wave. Unfortunately, harnessing tidal power is quite difficult. Some of the prototypes that have been tested in the decades are quickly destroyed by rushing tides. Pulling those turbines up from the sea bed and taking them into the shop consumes time and money. Taking the ScotRenewables turbine in for repairs should be easy: maintenance workers would just have to take a boat out, unhook it, and put another in its place while the first is being entangled.　　D  Tidal power is also 50 percent stronger at the surface than at the seabed so these turbines should be capable of generating more power. Other companies have tried to create surface tidal turbines before. The difficulty has been keeping the turbine pointed in the direction of the tide. Some get washed away. Other times, the creators build large superstructures around the turbine, which costs money. ScotRenewables says it will come up with control mechanisms and advanced hydrodynamics (i.e., aerodynamics in water) to keep the turbines pointed in the right direction.　　E  Scotland is betting heavily on wind and wave power. The notoriously harsh waves and currents of the Pentland Firth, a channel which separates the main body of the U.K. with the Orkneys that is often referred to as the Saudi Arabia of Marine Energy by locals. By 2020, Scotland wants to get half of its power from renewable sources, including large hydroelectric dams. Hydroelectric constitutes about 11 percent of the country’s power now and 9 percent comes from wind and other renewables. A large portion of the new renewable sources of power will come from wind, tidal and wave. Marine energy could provide up to 35 terawatt hours of power to the U.K. by 2020 and 84 terawatt hours of power by 2050, according to Edwina Cook, business development officer at EMEC. The U.K. in 2004 consumed 340 terawatt hours of power. The EMEC has created tidal and wave testing centers for companies to build and validate prototypes. (The Pelamis-that sea snake looking wave power device-was tested at EMEC before commercial rollouts in Portugal.) The government has also passed exceptionally large credits for power providers that put tidal and wave power on the grid. (Prototypes participating in the EMEC test beds are actually connected to the grid and selling small amounts of power.) The hope is that the programme will create jobs, exports and green energy. Offshore, the Dublin based open Hydro Power is already testing a large tidal device that looks like a big rotating fan.　　F  Talking about the prototype and commercial power production, however, is easier said than done. ScotRenewables did not like the software simulation tools it found when it first set out. Some software focused on tidal changes; others focused on waves. To build an effective surface tidal turbine, Johnston realized that both tidal and wave power should be taken into account. Thus, it had to build its own tools, which cost several thousands. It also built its own wave tank. It was easier than trying to book time at an EMEC wave tank. The company now hopes to lease time on the tank to other wave companies to generate revenue. And, because ships to deploy tidal and wave devices are in short supply, it is contemplating buying or building its own multi-purpose vessel.　　Which paragraph contains the following information?　　Write the correct letter, A-F, in boxes 1-4 on your answer sheet.　　1. New plan has been made to involve a new factor besides tidal.　　2. Damages have happened to the models in the past years.　　3. A detailed structure of a model is demonstrated.　　4. The immature model is expected to apply at the beginning of the twenty first century after further development.

[判断题]统计数据都应当被及时公布，提供给全社会的统计信息使用者。（　　）[2014年初级，2010年中级真题]

[填空题]静力稳定度是指静止气层的平衡性质，可分为（）三种不同的情形。

[多选题]劳动合同内容有法定必备条款和当事人任意约定条款之分，下列属于劳动合同法定条款的是（）

[单选题]瘀血证可见（　　）。

[问答题]感染了丙肝的妇女可以怀孕吗？

[名词解释题]气门间隙

[填空题]拱桥墩台除承受拱圈传来的竖直压力，还承受（）。

[多选题]客户变更主营业务的主要情形有( )。

[判断题]我国旅行证有两种，入出中国国境一年一次有效和两年多次有效。

[判断题]旅行证分一年一次有效和两年多次有效两种。

[多选题]我国旅行证有入出中国国境（）。

[判断题]我国旅行证分为1年一次有效和2年多次有效两种。

[多选题]旅行证（）。

[问答题]我国传统的黄釉哪有两种？

[填空题]范镇总结的我国两种调名体系是（），（）。

[填空题]我国驯养的主要茸鹿品种有两种，它们是（）与（）。

[问答题]说出两种我国传统的绿茶

[判断题]持用外国人旅行证的旅客如果取得证件国籍国的护照或其他旅行证件，则该外国人旅行证即告失效，并须将其交回原发证机关。