Once all cylinders are firing regularly, () is shut off.
A、the exhaust valve
B、the starting air
C、the inlet valve
D、the fuel oil
A、the exhaust valve
B、the starting air
C、the inlet valve
D、the fuel oil
A、increase blow-by in all cylinders B、incomplete combustion in all cylinder C、overloading in all cylinders D、insufficient fuel delivery to all cylinders
A、once every crankshaft revolution B、once every two crankshaft revolutions C、once every piston stroke D、twice every piston stroke
A、once every crankshaft revolution B、once every two crankshaft revolutions C、once every piston stroke D、twice every piston stoke
A、Once created, a sequence belongs to a specific schema. B、Once created, a sequence is linked to a specific table. C、Once created, a sequence is automatically available to all users. D、Only the DBA can control which sequence is used by a certain table. E、Once created, a sequence is automatically used in all INSERT and UPDATE statements.
A、Once created, a sequence belongs to a specific schema. B、Once created, a sequence is linked to a specific table. C、Once created, a sequence is automatically available to all users. D、Only the DBA can control which sequence is used by a certain table. E、Once created, a sequence is automatically used in all INSERT and UPDATE statements.
A、A. Once created, a sequence belongs to a specific schema. B、B. Once created, a sequence is linked to a specific table. C、C. Once created, a sequence is automatically available to all users. D、D. Only the DBA can control which sequence is used by a certain table. E、E. Once created, a sequence is automatically used in all INSERT and UPDATE statements.
A、injecting fuel oil into a cylinder B、removing exhaust gases from the cylinder C、forcing air into the cylinders under pressure after the exhaust valve has dosed D、a combination of all the above
A、blows out the exhaust gases B、supplies oxygen for combustion C、cools the valves and cylinder walls D、all of the above