________ are prepaid payment orders that can be purchased from banks

A 2-week-old infant who presents with poor feeding, fatigue, dyspnea, and a murmur is diag-nosed with a patent ductus arteriosus (PDA). This condition results in a(n):

a. decreased pulmonary blood flow. b. right-to-left shunt. c. left-to-right shunt. d. increased systemic blood flow.

When calibrating an ocular micrometer for a microscope, one must remember to perform the procedure

A) on each microscope used for examination. B) on each objective on the microscope. C) annually. D) all of the above.