Answer:
Dead band 
Explanation:
In Instrumentation, dead band is defined as a range in which a measuring instrument or controller does not respond. It is also known as the neutral zone or dead zone and it is usually caused by packing friction or unbalanced forces. 
 
        
             
        
        
        
Answer:
i think its the second one
Explanation:
brainliest pls
 
        
                    
             
        
        
        
It is both true that <span>Technician A says that the excessive length of a heater hose is intended to protect the heater core from undue stress. Technician B says that excessive wear adds to the length of a heater hose, and a replacement heater hose should be roughly three to four inches shorter than its predecessor.  So the asnwer is letter B.</span>