單項(xiàng)選擇題

A.Cranes/derricks
B.Crane/derrick cycles
C.Crane/derrick cycle time
D.Weight per package

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A.Date and description of each failure
B.Average load in pounds for each usage
C.Total number of lifts for each usage
D.All of the above

A.less jerky starts
B.less jerky stops
C.overheating worries
D.none of the overheating worries