In adults, the stem cells responsible for the production of red and white blood cells originate primarily in the
A) liver.
B) thymus.
C) spleen.
D) red bone marrow.
E) yellow bone marrow.
D) red bone marrow.
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An unknown gas occupies a volume of 0.075 m3, has a pressure of 0.500 MPa, and a temperature of 47°C. You determine that the gas is either CO2, O2, N2, or CH4. Using the volume, pressure, and temperature given, determine the mass that would be expected for these four gases. If you measure the mass to be 0.441 kg, which of the four gases is the unknown gas likely to be?
Given: V = 0.075 m3; P = 500 kPa; T = 47°C = 320 K What will be an ideal response?
Technician A says to carefully install all accessories when installing a replacement engine. Technician B says that when installing the transmission and other components on the engine block, be sure to use a box wrench to tighten all fasteners to factory specifications. Who is right?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
Technician A checks for gasoline in the oil by holding a match to the dipstick. Technician B checks for water in the oil by dropping a small amount on the hot manifold to see if it bubbles. Which technician is correct?
A) Technician A only B) Technician B only C) Both Technicians A and B D) Neither Technician A nor B
The following statements are all correct EXCEPT:
A) Fuel systems that have never been cleaned may have developed wax deposits as well as carbon. B) On engines operating very poorly, the PCM should be relearned after fuel system cleaning. C) Relearning the PCM should never be attempted. D) The fuel rail and pressure regulator should be cleaned as well as fuel injectors.