[Answer] What is the most expensive aircraft in the world?

Step 1 : Introduction to the question "What is the most expensive aircraft in the world?"

...1. Boeing 747-8 2. B-2 Spirit Bomber 3. Airbus A380 4. Air Force One

[Answer] 7. On 15 December 1944, I boarded a single-engine Norseman aircraft at a military airstrip north of London. The plane took off for Paris, and I disappeared forever. Which famous bandleader am I?

Step 1 : Introduction to the question "7. On 15 December 1944, I boarded a single-engine Norseman aircraft at a military airstrip north of London. The plane took off for Paris, and I disappeared forever. Which famous bandleader am I?"

...1. Count Basie 2. Joe Loss 3. Ted Heath 4. Glenn Miller Probably the most popular musician and bandleader of his time, Glenn Miller was to have led his United States Army Air Forces Band in a Christmas concert for Allied troops in liberated Paris. He decided to travel ahead of his band, despite heavy rain and fog. There was no search or enquiry into the disappearance and it was assumed that, because of poor weather conditions, the plane had gone down in the English Channel. No wreckage was ever discovered. Possibly because of the lack of an enquiry, various rumours circulated after Glenn Miller's disappearance. It was rumoured that he had died of a heart attack in a Paris brothel; or was hidden, disfigured after being shot down by the Germans; or had been terminated as a German spy.

[Answer] 7. This type of engineer designs, develops, and tests aircraft, spacecraft, and missiles and supervises the manufacture of these products.

Step 1 : Introduction to the question "7. This type of engineer designs, develops, and tests aircraft, spacecraft, and missiles and supervises the manufacture of these products."

...1. Civil Engineer 2. Safety Engineer 3. Mechanical Engineer 4. Aerospace Engineer Aerospace engineers develop new technologies for use in aviation, defense systems, and space exploration, often specializing in areas such as structural design, guidance, navigation and control, instrumentation and communication, or production methods.