单选题It is often necessary to put an engine into （） service with one or more cylinders cut out, or with a turbocharger secured.AadditionalBpermanentCtemporaryDlong
单选题
It is often necessary to put an engine into （） service with one or more cylinders cut out, or with a turbocharger secured.
A
additional
B
permanent
C
temporary
D
long
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