_______is usually driven by the engine camshaft an
_______is usually driven by the engine camshaft and supplies pilot air to the cylinder air start valve.
A.An air receiver
B.An operating valve
C.An automatic valve
D.An air distributor
请帮忙给出正确答案和分析，谢谢！
参考解答
41j***779
2024-06-14 19:13:48
正确答案：D
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