单选题下列哪种不是绞辘?()A单绞辘B单滑轮C复绞辘D差动(机械)滑车机械)滑车:()
单选题
下列哪种不是绞辘?()
A
单绞辘
B
单滑轮
C
复绞辘
D
差动(机械)滑车机械)滑车:()
参考解析
解析:
暂无解析
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