Social Sciences. In short, a two-mode is a hybrid vehicle that can operate in two distinct ways (modes). The first mode works much like a regular full hybrid. It is the second mode that makes the difference--where the hybrid system can adjust varying amounts of engine and motor function to meet very specific vehicle/task/traffic requirements.
Twain's first book, The Innocents Abroad, was published in 1869, The Adventures of Tom Sawyer in 1876, and The Adventures of Huckleberry Finn in 1885. He wrote 28 books and numerous short stories, letters and sketches. Mark Twain passed away on April 21, 1910, but has a following still today.
Riverboats were a popular way to get around in Mark Twain's day. In 1863, when Clemens was 27, he wrote a humorous travel story and decided to sign his name Mark Twain.. This name comes from something shouted by crewmen on a boat. The crewman is calling for two fathoms, or a depth of 12 feet, which is barely enough for a boat to navigate safely. Twain is an old-fashioned way of saying two and a fathom is six feet.