1. In each of the following situations, identify the customer and the server:

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(a) Planes arriving at an airport.

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(b) Taxi stand serving waiting passengers.

(c) Tools checked out from a crib in a machining shop.

(d) Letters processed in a post office.

(e) Registration for classes in a university.

(I) Legal court cases.

(g) Check-out operation in a supermarket.

*(h) Parking lot operation.