A characteristic of water vapor, but not other states of water is:
A) Water is compressible.
B) Water exerts equal pressure to the sides of a container in which it is placed.
C) Small changes in the volume of water occur with changes in temperature.
D) Water molecules move about freely.
A
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Because of the manufacturing process, ferrous metals contain a certain amount of carbon. Cast iron has much larger amount of carbon (2.5% to 4%) as compared with steel (0.1% to 1.7%). How does carbon affect the property of cast iron and steel?
What will be an ideal response?
Technician A says that all current diesel CR fuel systems use a transfer pump. Technician B says that Caterpillar flange mount their transfer pump to the CR high pressure pump. Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B
One advantage of steam humidifiers is that:
A) They do not have a water sump. B) They operate on 24 V. C) They provide the energy required to evaporate the water. D) They use less energy than evaporative humidifiers.
Dissolved minerals in the boiler feedwater system include metallic salts and calcium carbonates that cause scale, corrosion, and turbine blade deposits. Boiler feedwater is treated with __________ to precipitate these minerals from the water.
a. lime b. salt c. lemon d. ethanol