下面哪个是梯形桨叶
A.https://www.wrjtk.com/uploads/question/20250118/s_678b20c5a23c5.png
B.https://www.wrjtk.com/uploads/question/20250118/s_678b20c54baba.png
C.https://www.wrjtk.com/uploads/question/20250118/s_678b20c4e8d91.png
参考答案：B
题目解析:
