The second engineer seemed to know what the sign ______.A.stand byB.stand forC.stood byD.s

In engines with system, the lubricating oil can be added to the engine through the filling

Due to excessive water in the fuel, a diesel engine fails to startBefore the engine can be

A diesel engine fails to start because of water in the fuelIn order to start the engine, y

Leaking oil seals on a diesel engine turbocharger can causeA.the engine to run after the f

In the second paragraph, the author seems to indicate that______.A．people shouldn"t have p

The author seems to believe the revival of the U.