單項(xiàng)選擇題

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

你可能感興趣的試題

單項(xiàng)選擇題

When paralleled, AC generators must have the same （）

A.frequency
B.number of phases
C.phase rotation
D.All of the above

單項(xiàng)選擇題

A DC generator is used to supply direct current in order to maintain an AC generator field and is known as a/an （）

A.rotor
B.stator
C.exciter
D.armature

99色精品-9色在线-99色在线-99色视频 国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

To protect the rotor of a motor disassembled for maintenance or overhaul, it should be（）

你可能感興趣的試題

When paralleled, AC generators must have the same （）

A DC generator is used to supply direct current in order to maintain an AC generator field and is known as a/an （）

99色精品-9色在线-99色在线-99色视频国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精