Redundancy is important because A.) Safety is increased
B.) Some aviation systems have a relatively high failure rate
C.) More than one system should be available for critical flight
D.) All of the above

What is the chief metrological difference between measuring with a microscope and with an electronic comparator? a. the microscope is limited to small workpieces.a. the microscope is limited to small workpieces. c. the comparator can only examine one point on the workpiece. d. the microscope carries its own standard.