Technician A says that volatility is a measure of how easily gasoline evaporates. Technician B says that Reid Vapor Pressure (RVP) is one way to express how volatile a gasoline mixture is. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
C
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When using a power tool on a small part, place the part in a bench vise.
Answer the following statement true (T) or false (F)
You can save time, resources, and energy when ____ electrodes are used for the entire weld because you can eliminate the need to grind the root pass.
A. E6011 B. E6012 C. E6014 D. E7018
A glass initially contains 0.1 kg of ice and 0.05 kg of water. The ice, the water, the glass and the air surrounding them are all at T = 273.15 K and P = 0.1 MPa. The water is evaporating very gradually. Which of the following is true?
A. The ice and water are at equilibrium with each other and with the surroundings. B. The ice and water are not in equilibrium with each other, but if 0.025 kg of ice melted, making the masses of the ice and water equal, they would then be in equilibrium with each other. C. The water is in thermal and mechanical equilibrium with the air, but not in chemical equilibrium. D. The system is at steady state but not in equilibrium. E. None of the above are true.
Bubbles in the sight glass always indicate refrigerant shortage.
Answer the following statement true (T) or false (F)