To stay safe you must: A. Prevent accidents from occurring B. Never leave the house C. Take precautions to avoid violence D. A and C

Two technicians are discussing the common u-joint. technician a says its input and output speeds should be equal. technician b says that it normally has two yokes. which technician is correct?

Hazel has just finished adding pictures to her holiday newsletter. she decides to crop an image. what is cropping an image?

Why do we mark tlc plates with pencil and not with pen