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中单选题
下列各项中，何者为图中Ⅰ的弯矩图？
- A.<img src="https://timg.fentiku.com/97/2016/12/22/Ix3beScBe2.png" title='Ix3beScBe2.png' alt='Ix3beScBe2.png'/>
- B.<img src="https://timg.fentiku.com/97/2016/12/22/NZvYz8PE4z.png" title='NZvYz8PE4z.png' alt='NZvYz8PE4z.png'/>
- C.<img src="https://timg.fentiku.com/97/2016/12/22/NBzt0obKPg.png" title='NBzt0obKPg.png' alt='NBzt0obKPg.png'/>
- D.<img src="https://timg.fentiku.com/97/2016/12/22/1CfFHx3I3s.png" title='1CfFHx3I3s.png' alt='1CfFHx3I3s.png'/>
正确答案：C