Cleaning and ventilation is important to electric motors because windings can collect dirt that will restrict circulation of air through the motor. If the cooling air is blocked winding may get too cool.

Simple method(s) for troubleshooting steam traps.

All are maintenance duties of the outside technician EXCEPT:

Pentamidine isethionate is used to treat which opportunistic disease?

Plasmids containing viral gene can be put back into bacteria such that the bacteria produce the viral proteins. These proteins can be isolated and used _______________

True or False: The (121), (242), and (484) planes are all parallel with one another in a cubic crystal. 

For a cubic crystal, which of the following planes would have the LARGEST diffraction angle when characterized using x-ray diffraction?

Which of the following statements is generally true about the mass densities of STYROFOAM  and PLEXIGLASS:

True/False: Because of their rigid bonding angles, covalent solids usually have more open crystal structures than ionic solids.

Which of these images shows the direction in a unit cell?