Question: The first satellite, BeiDou-1A, was launched on 30 October 2000, followed by BeiDou-1B on 20 December 2000. The third satellite, BeiDou-1C (a backup satellite), was put into orbit on 25 May 2003. The successful launch of BeiDou-1C also meant the establishment of the BeiDou-1 navigation system.
Is there an answer to this question: What was the purpose of launching the BeiDou-1C satellite?

Answer: a backup satellite

Question: Since the 2006 FIFA World Cup, the internal and external evaluation of Germany's national image has changed. In the annual Nation Brands Index global survey, Germany became significantly and repeatedly more highly ranked after the tournament. People in 20 different states assessed the country's reputation in terms of culture, politics, exports, its people and its attractiveness to tourists, immigrants and investments. Germany has been named the world's second most valued nation among 50 countries in 2010. Another global opinion poll, for the BBC, revealed that Germany is recognised for the most positive influence in the world in 2010. A majority of 59% have a positive view of the country, while 14% have a negative view.
Is there an answer to this question: What year did BBC reveal that Germany is the most positive influence in the world?

Answer: 2010

Question: On April 25, 2007, Internet Archive and Suzanne Shell jointly announced the settlement of their lawsuit. The Internet Archive said it "...has no interest in including materials in the Wayback Machine of persons who do not wish to have their Web content archived. We recognize that Ms. Shell has a valid and enforceable copyright in her Web site and we regret that the inclusion of her Web site in the Wayback Machine resulted in this litigation." Shell said, "I respect the historical value of Internet Archive's goal. I never intended to interfere with that goal nor cause it any harm."
Is there an answer to this question: When did Suzanne Shell's suit against Internet Archive come to an end?

Answer: April 25, 2007

Question: When the alloy cools and solidifies (crystallizes), its mechanical properties will often be quite different from those of its individual constituents. A metal that is normally very soft and malleable, such as aluminium, can be altered by alloying it with another soft metal, like copper. Although both metals are very soft and ductile, the resulting aluminium alloy will be much harder and stronger. Adding a small amount of non-metallic carbon to iron produces an alloy called steel. Due to its very-high strength and toughness (which is much higher than pure iron), and its ability to be greatly altered by heat treatment, steel is one of the most common alloys in modern use. By adding chromium to steel, its resistance to corrosion can be enhanced, creating stainless steel, while adding silicon will alter its electrical characteristics, producing silicon steel.
Is there an answer to this question: What type of metal is hardly copper?

Answer:
unanswerable