ring spanner()
adjustable(shifting)spanner()A、活络扳手B、钳子C、锤子D、锯
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Excuse me, may I ()your spanner?A、doB、lendC、returnD、borrow
Paint should be evenly ()(分布).A、spreadB、suppliedC、distributedD、spanner
box spanner()A、套筒扳手B、活络扳手C、梅花扳手D、锤子
Ring the forecastle()(钟).A、bellB、clockC、hammerD、spanner
单选题In large, low-speed, main propulsion diesel engine, position ring groove wear usually occurs at the()A top of the ring grooveB back of the ring grooveC bottom of the ring grooveD piston ring end clearance
单选题In some diesel engine designs,()the injection of cylinder oil is timed to impinge when the piston and only impinge on()A is coming upward;cylinder ring beltB is going downward;piston ring beltC is coming upward;piston ring beltD is going downward;cylinder ring belt