SOMEONE PLEASE HELP ME! Appreciated very much

Avehicle has an oil leak that is causing the entire oil pan to be wet, but inspection reveals no exact source after cleaning off the oil residue. technician a says to install a fluorescent dye in the crankcase and operate the engine, then re-inspect for leaks with a special light (black light). technician b says the oil leak may be coming from a source at the top of the engine, such as a valve cover gasket. who is correct?

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above

What does si stand for, when referring to a system of measurement