单选题To protect the rotor of a motor disassembled for maintenance or overhaul, it should be（）Asuspended by wire slings in one comer of the shopBwrapped in several layers of heavy paper or carboardCsupported by flat wood blocks on the workbenchDreturned to the frame as soon as the bearings are removed
单选题
To protect the rotor of a motor disassembled for maintenance or overhaul, it should be（）
A
suspended by wire slings in one comer of the shop
B
wrapped in several layers of heavy paper or carboard
C
supported by flat wood blocks on the workbench
D
returned to the frame as soon as the bearings are removed
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