1. A single-coolant-tube-row car radiator is a crossflow heat exchanger with following fluid…

1. A single-coolant-tube-row car radiator is a crossflow
heat exchanger with following fluid streams:

(a) mixed–mixed (b) mixed–unmixed (c) unmixed–unmixed

2. A truck radiator with six coolant-tube rows and
multilouver air centers is a crossflow heat exchanger with following fluid
streams:

(a) mixed–mixed (b) mixed–unmixed (c) unmixed–unmixed