Exhaust temperature increases in all cylinders, the possible cause may be（） (1) increased scavenging air temperature (2) air in fuel pumps and fuel valves (3) fouling of air and gas passages
- A(1)+(2)
- B(1)+(3)
- C(2)+(3)
- D(1)+(2)+(3)
问题
Exhaust temperature increases in all
参考解析：
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