Why are copper fittings cleaned before soldering or brazing?
A) To create enough clearance so that the pipe will fit into the fitting
B) To enhance the aesthetic appearance of the completed joint
C) To make it easier to see the junction between the fitting and the pipe
D) To remove oxides
D
You might also like to view...
Devise and carry out an information-gathering exercise for a “reading assistant to hold and present multiple open books for cross referencing” using the three steps given in Section 4.6.
What will be an ideal response?
Las losas nervuradas, confor- madas por nervaduras o viguetas de concreto reforza- das que están coladas mono- líticamente con una losa del- gada en la parte superior, también se conocen como losas _____.
a. de placas planas armadas en dos direcciones b. de vigueta armadas en una dirección c. macizas armadas en una dirección d. de varios componentes
Technician A says that containers for dirty shop rags should be made of metal. Technician B says that these containers should have a lid that stays closed. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
When the refrigerant passes through the metering device, some of it starts to flash from a liquid to a gas because:
A) Of the turbulators located near the end of the metering device. B) A large amount of heat is added to the refrigerant in the metering device. C) The pressure has dropped to the saturation point. D) The pressure has increased above the saturation point.