What did Daniel Hayes invent?A、A single-engine fire truck.B、A water-powered fir

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问题 What did Daniel Hayes invent?

选项 A、A single-engine fire truck.
B、A water-powered fire truck.
C、A record player.
D、A circular ladder holder.

答案 D

解析细节题。文章后面讲到在一辆(消防)卡车顶端有一个圆形的旋转平台，平台上立着一架云梯，这个发明源自Daniel Hayes。故D项正确。

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