Running an electric winch at slow speed over a long period of time causes（）.
- Athe speed to be retarded by the friction brake
- Ba load to go downward at full speed
- Cthe circuit breaker to turn off
- Dthe resistors to overheat and eventually burn out
问题
Running an electric winch at slow spee
参考解析：
分类：货物装卸货作业题库
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