1 kgf·m=（）A、0.980 665N·m；B、1N·m；C、9.806 65N·m；D、98.066 5N·m。
1 kgf·m=（）
- A、0.980 665N·m；
- B、1N·m；
- C、9.806 65N·m；
- D、98.066 5N·m。
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