Problem: Aircraft carrier:

As "runways at sea", aircraft carriers have a flat-top flight deck, which launches and recovers aircraft. Aircraft launch forward, into the wind, and are recovered from astern. The flight deck is where the most notable differences between a carrier and a land runway are found. Creating such a surface at sea poses constraints on the carrier – for example, the fact that it is a ship means that a full-length runway would be costly to construct and maintain. This affects take-off procedure, as a shorter runway length of the deck requires that aircraft accelerate more quickly to gain lift. This either requires a thrust boost, a vertical component to its velocity, or a reduced take-off load (to lower mass). The differing types of deck configuration, as above, influence the structure of the flight deck. The form of launch assistance a carrier provides is strongly related to the types of aircraft embarked and the design of the carrier itself.

What design feature do aircraft carriers feature to aid in launching and recovering aircraft?
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A: flat-top flight deck


Problem: High-definition television:

Despite delays in some countries, the number of European HD channels and viewers has risen steadily since the first HDTV broadcasts, with SES's annual Satellite Monitor market survey for 2010 reporting more than 200 commercial channels broadcasting in HD from Astra satellites, 185 million HD capable TVs sold in Europe (£60 million in 2010 alone), and 20 million households (27% of all European digital satellite TV homes) watching HD satellite broadcasts (16 million via Astra satellites).

What percentage of European digital satellite TV homes were watching SD broadcasts in 2010?
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A: unanswerable


Problem: Washington University in St. Louis:

Although Chancellor Wrighton had noted after the 2004 debate that it would be "improbable" that the university will host another debate and was not eager to commit to the possibility, he subsequently changed his view and the university submitted a bid for the 2008 debates. "These one-of-a-kind events are great experiences for our students, they contribute to a national understanding of important issues, and they allow us to help bring national and international attention to the St. Louis region as one of America's great metropolitan areas," said Wrighton.

Who said "These common events are a great experience for our students..." in 2008?
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A: unanswerable


Problem: USB:

USB implements connections to storage devices using a set of standards called the USB mass storage device class (MSC or UMS). This was at first intended for traditional magnetic and optical drives and has been extended to support flash drives. It has also been extended to support a wide variety of novel devices as many systems can be controlled with the familiar metaphor of file manipulation within directories. The process of making a novel device look like a familiar device is also known as extension. The ability to boot a write-locked SD card with a USB adapter is particularly advantageous for maintaining the integrity and non-corruptible, pristine state of the booting medium.

What is the process of making a novel device look like a familiar device?
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A:
extension