Compared to hot water heating coils, steam heating coils are ...

[crobinson2013]

Compared to hot water heating coils, steam heating coils are
 
  A) Mostly plastic materials rather than metal B) More complicated in construction
  C) Physically smaller D) Physically larger

Question 2

When adding a specific amount of refrigerant to a new system, how do you measure the amount of refrigerant added?
 
  A) Use a digital scale to remove refrigerant until a negative number registers.
  B) Use a digital scale to register change as the refrigerant exits the cylinder.
  C) Use a digital scale to register change as you add refrigerant to the cylinder.
  D) Use a digital scale to weigh the refrigerant cylinder.

[scikid]

Answer to Question 1

C

Answer to Question 2

B

[crobinson2013]

TYSM

[abro1885]

Gracias!