A diesel engine cylinder head can crack as a result of （）<br>A:a leaking seal ring<br>B:heat transfer from exhaust valves<br>C:restricted cooling passages<br>D:overheated intake valves

A diesel engine cylinder head can crack as a result of （）
A:a leaking seal ring
B:heat transfer from exhaust valves
C:restricted cooling passages
D:overheated intake valves

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