The closing of the exhaust valves used on a modern
The closing of the exhaust valves used on a modern, large, low-speed, main propulsion diesel engine may be directly provided by_______.
A.large conical springs
B.compressed air pressure
C.hydraulic pressure
D.exhaust gas pressure
请帮忙给出正确答案和分析，谢谢！
参考解答
488***779
2024-06-14 16:54:26
正确答案：B
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