A、overhaul
B、running
C、blowing down
D、All of the above are correct
更多“During （）, the starting air valves should be closed to prevent the engine from turning.”相关的问题
A、Press the F4 key during start up. B、Hold down the left Shift key during start up. C、Press the F2 key during start up. D、Press the F8 key during start up.
A、removing all but the frictional load during starting B、relieving intercoolers of high temperature buildups C、providing high starting torque in the drive motor D、seating valve plates during compressor shutdown
A、result in decreased acceleration time only B、lower the starting current and increase accelerating time C、cause a greater starting torque D、increase the starting current and pump capacity
A、A.increasing the quantity of starting air B、B.increasing the lube oil pressure C、C.heating the engine fuel supply D、D.heating the engine coolant
A、during low loads B、after proper oil viscosity is reached C、during starting D、after cleaning filters
A、The index is not used by the optimizer but is maintained during DML operations. B、The index is not used by the optimizer and is not maintained during DML operations. C、The index is used by the optimizer only if a hint is specified in the query statement and is maintained during DML operations. D、The index is used by the optimizer only if a hint is specified in the query statement but is not maintained during DML operations.
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