What do ensemble performers use to help them start a piece of music at the same time? O Count off
O Count on
O Power down
O Power up

No i haven’t i will now.

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Fist of all, you need to learn about cad and architecture or basic engineering or architecture drawing in order to prorperly use and utilize cad programs.it's as abbreviated computer-aided-drafting. it will the user acquire skills faster since it's aided by technology