Why might closing the oxygen cylinder, then the acetylene cylinder, then bleeding first the oxygen line, then finally the acetylene line at the end of a brazing project create a hazardous situation?
A) The acetylene and oxygen lines should be bled simultaneously.
B) The acetylene and oxygen cylinders should be closed simultaneously.
C) The acetylene cylinder should be closed first.
D) The last gas to go through the torch will be a flammable gas.
Question 2
When the heat load on the evaporator increases, the automatic expansion valve:
A) Closes to keep the pressure from increasing.
B) Does nothing because AEVs are not modulating devices.
C) Sends a signal to the electronic control board indicating the change.
D) Opens to feed more refrigerant.
A schematic of the circulatory system illustrating the pulmonary circulation picking up oxygen from
An ignition- or mixture-related misfire can cause hash on the oxygen sensor waveform.
Combined effects of CO2 and BPG on oxygen binding by hemoglobin
Cylinder Power Balance Test
A container in the shape of a right circular cylinder with no top has surface area square feet.
How many grams of H2 gas are there in a 5.00-L cylinder at 4.00 × 103 mm Hg and 23°C?