The rate of heat transfer between the hot and cold fluids passing through a shell－and－tube type heat exchanger will ____

The rate of heat transfer between the hot and cold fluids passing through a shell－and－tube type heat exchanger will _____.

A、remainconstantalongthetubeslength
B、begreatestinasinglepasscounterflowheatexchanger
C、remainconstantthroughouttheheatexchanger
D、varyfromsectiontosectionthroughouttheheatexchanger

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