单选题What is the purpose of the limit switch on gravity davits?（）ATo cut off the power when the davits hit the track safety stopsBTo stop the davits from going too fastCTo cut off the power when the davits are about 12 inches or more from the track safety stopsDNone of the above
单选题
What is the purpose of the limit switch on gravity davits?（）
A
To cut off the power when the davits hit the track safety stops
B
To stop the davits from going too fast
C
To cut off the power when the davits are about 12 inches or more from the track safety stops
D
None of the above
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