Answer:
b) revenue is less than expenses
Explanation:
Answer:
The space suit
Though the first man stepped on the moon in 1969, in the 1930s astronomers and physicists were already planning for the voyage to outer space. Emilio Herrera Linares, a Spanish military colonel, is credited with being the first to design a pressurised suit which was used in a high-altitude balloon flight in 1936.
The modern mop
While the mop isn’t the most glamorous of inventions, it certainly is one of the most useful. People had been using rags to wash floors since the 15th century but it was in the 1960s that the engineer Manuel Jalón Corominas had the idea to create a purpose-built mop with a bucket to ring the water out in.
Explanation:
that's just a few ^_^!!!
The nations that fielded jet fighters during world war ii were: Germany, United Kingdom, United States, Japan, and the Soviet Union.
World war ii became the first war when jet aircraft was used in combat. Back then, the nations that could use this technology are only the leading industrialized nations.
