When dragging and dropping a clip segment from one part of a sequence to another, which is the default type of edit—overwrite or insert?

________ are very expensive and perform complex mathematical calculations, such as those used in weather forecasting and medical research

A) Mainframes B) Servers C) Clients D) Supercomputers

Relative humidity should be maintained between ________ to avoid the threats from both low and high humidity.

A. 20% and 80% B. 40% and 60% C. 50% and 50% D. 30% and 70%