【单选题】
机车鸣笛，呼唤信号的鸣示方式是_______。___
A. 一长一短声
B. 一长二短声
C. 一短一长声
D. 二短一长声
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答案
D
解析
暂无解析
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【单选题】
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Many coaches and parents are in the habit of criticizing young athletes __________.___
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【单选题】
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