单选题A three-way thermostatic control valve regulates the diesel engine cooling water temperature by passing a portion of the water （）.Aaround the engineBaround the coolerCto the expansion tankDoverboard
单选题
A three-way thermostatic control valve regulates the diesel engine cooling water temperature by passing a portion of the water （）.
A
around the engine
B
around the cooler
C
to the expansion tank
D
overboard
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