If the ECG tracing is too large, the sensitivity dial should be turned down to to produce a standardization mark:
A) 10 mm high and 2 mm wide
B) 5 mm high and 2 mm wide
C) 15 mm high and 4 mm wide
D) 20 mm high and 4 mm wide
Question 2
A patient's Snellen visual acuity screening results are 20/40. How would this be interpreted?
A) The patient sees at 40 feet what others see at 20 feet.
B) The patient sees at 20 feet what others see at 40 feet.
C) Others see at 40 feet what the patient sees at 20 feet.
D) None of the above
Furchgott's discovery that endothelial cells produce a vasodilating substance.
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