Which audible respiratory sounds would make you suspicious of an upper airway problem?

What disease process is associated with much higher risk of tuberculosis?

a. Asbestosis b. Coal worker's pneumoconiosis c. Sarcoidosis d. Silicosis

Which of the following is a cause of stray light failure in a spectrophotomer?

A. Fingerprints on a cuvet B. Misaligned monochromator C. Room light entering the spectrophotometer and impinging upon the detector D. A dirty holmium oxide filter