Technician A says that the use of some RTV sealants to seal components on an engine can damage the oxygen sensor. Technician B says that it is common to use a heavy-duty reversible drill to spin the oil pump to pre-lube the engine. Who is correct?a. tech Ab. tech Bc. both A and Bd. neither A nor B

The correct option is C(both A and B)

Explanation:

In engine chambers, internal combustion of fuel is used to produce mechanical energy.

RTV ( Room Temperature Vulcanising) sealants are silicon products used for the sealing purpose of the engine component. As the name implies once exposed to air, it solidifies. However, it has a negative effect on the oxygen sensor of the engine components by makes a coating over the sensors with the silicone film and, after a time, will affect the operation performed by them. Therefore Technician A is correct.

Technician B is equally correct in that an engine need to be lubricated with oil to help cool the moving part while on. But in order to ensure that oil reaches all movable parts a common method know as heavy-duty reversible spin drills is applied. This method regulates the flow of oil using the engine.

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide