Commercial helicopters are genrally used for public air trvel for shorter distances. Flown by a commercial pilot who has gone through hundreds of hours of flight, medical and engine failur traning.
one is north of the other, and thousands of other differences
There are so many small and medium helicopters there is no such thing as "regular" . Most helicopters other than large military ones, carry between 4 and 8 passengers.
what are power differences between the Texas lt governor and other state lt governors
Among other differences, Judaism is monotheistic.
ones harder then the other
I highly doubt there are any physical differences between Jews and other people. Every is equal so there shouldn't be. However, that is my assumption.
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Every brand of computer uses different manufacturers, which translates into differences between the technologies being used to make the computers, differences in the raw materials being used, and differences in the choices made for the computers, such as what types of components to use at all. Because of all these differences, each computer company has real differences between its' products and those of other companies.
plasma membrane and other membranes are the same
Yes, dogs are able to distinguish between other dogs by their barks.