单选题Temperature control valves installed in the jacket cooling water system of a diesel engine modulates the rate of water flow through the （）.Acooling water pumpBnozzle cooling passagesCcylinder jacketsDheat exchanger
单选题
Temperature control valves installed in the jacket cooling water system of a diesel engine modulates the rate of water flow through the （）.
A
cooling water pump
B
nozzle cooling passages
C
cylinder jackets
D
heat exchanger
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