Here is a question about this article: Additionally, there are issues of connections between different electrical services, particularly connecting intercity lines with sections electrified for commuter traffic, but also between commuter lines built to different standards. This can cause electrification of certain connections to be very expensive simply because of the implications on the sections it is connecting. Many lines have come to be overlaid with multiple electrification standards for different trains to avoid having to replace the existing rolling stock on those lines. Obviously, this requires that the economics of a particular connection must be more compelling and this has prevented complete electrification of many lines. In a few cases, there are diesel trains running along completely electrified routes and this can be due to incompatibility of electrification standards along the route.
What is the answer to this question: What is the solution many lines came up with in order to avoid replacing present rolling stock?
****
So... to be overlaid with multiple electrification standards

Here is a question about this article: The editor, Larry Lamb, was originally from a Labour background, with a socialist upbringing while his temporary replacement Bernard Shrimsley (197275) was a middle-class uncommitted Conservative. An extensive advertising campaign on the ITV network in this period, voiced by actor Christopher Timothy, may have helped The Sun to overtake the Daily Mirror's circulation in 1978. Despite the industrial relations of the 1970s the so-called "Spanish practices" of the print unions The Sun was very profitable, enabling Murdoch to expand his operations to the United States from 1973.
What is the answer to this question: What was Shrimsley's political background?
****
So... middle-class uncommitted Conservative.

Here is a question about this article: During the Nimrod Expedition led by Ernest Shackleton in 1907, parties led by Edgeworth David became the first to climb Mount Erebus and to reach the South Magnetic Pole. Douglas Mawson, who assumed the leadership of the Magnetic Pole party on their perilous return, went on to lead several expeditions until retiring in 1931. In addition, Shackleton himself and three other members of his expedition made several firsts in December 1908 February 1909: they were the first humans to traverse the Ross Ice Shelf, the first to traverse the Transantarctic Mountains (via the Beardmore Glacier), and the first to set foot on the South Polar Plateau. An expedition led by Norwegian polar explorer Roald Amundsen from the ship Fram became the first to reach the geographic South Pole on 14 December 1911, using a route from the Bay of Whales and up the Axel Heiberg Glacier. One month later, the doomed Scott Expedition reached the pole.
What is the answer to this question: When did Roald Amundsen reach the geographic south pole?
****
So...
14 December 1911