单选题Which of the following procedures should be carried out to permit the use of a crosshead engine with an inoperable after-cooler?（）ABypass the after-cooler to operate at speedBRun at reduced speed until the cooler can be repaired or renewedCSwitch to diesel fuel and run at full speedDNothing need to be done due to the low heating value of heavy fuel
单选题
Which of the following procedures should be carried out to permit the use of a crosshead engine with an inoperable after-cooler?（）
A
Bypass the after-cooler to operate at speed
B
Run at reduced speed until the cooler can be repaired or renewed
C
Switch to diesel fuel and run at full speed
D
Nothing need to be done due to the low heating value of heavy fuel
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