We can remove the heavy rust on the plate with a ().
A、scraper
B、hammer
C、chipping hammer
D、saw
A、scraper
B、hammer
C、chipping hammer
D、saw
A、Removing a fileset update leaving the base fileset B、Removing a base fileset in the BROKEN state C、Removing a base fileset in the COMMITTED state and all fileset updates in the APPLIED stat D、Removing a base fileset in the COMMITTED state and all fileset updates in the COMMITTED state
A、They make it easier to replace the pump shaft packing B、They can be economically replaced as they wear out C、They can be removed when it is necessary to lighten the weight of the pump D、They increase the strength of the shaft