Which of the following problems is the main source
Which of the following problems is the main source of fuel pump and injection system malfunctions?
A.Improper lubrication
B.Air in the fuel system
C.Coated fuel lines
D.Excessive vibration
请帮忙给出正确答案和分析，谢谢！
参考解答
457***780
2024-06-14 23:54:22
正确答案：B
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