A、A.dirt will cause corrosion of bearing
B、B.bearings will leak oil excessively
C、C.dirt is very abrasive when mixed with grease
D、D.grease will become inflammable
更多“Dirt should not be allowed to contaminate a grease lubricant because the （）.”相关的问题
A、the trunking should be opened up B、should the trunking be opened up C、the trunking should not be opened up D、should the trunking not be opened up
A、A.will not be nefit B、B.would not be nefit C、C.should not be nefit D、D.couldnot be nefit
A、The hose should not be twisted B、The hose should be protected with a sleeve if it is subjected to rubbing C、There should be some slack in the hose D、All of the above
A、The pressure-vacuum relief valve should be reset B、The tanks should be made seaworthy to prevent contamination C、The tanks should be sounded to make sure the levels are not rising D、The tanks should be marked with a bull stamp on the manifold filling valve
A、A.excess stresses will not be set up in the boiler B、B.the decks will not be covered with soot C、C.the soot will be swept toward the uptakes D、D.there will not be a loss of steam pressure
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