某些种类的海豚利用回声定位来发现猎物：它们发射出滴答的声音，然后接收水域中远处物体反

发布时间：2017-07-23 19:41 │ 来源：www.tikuol.com

题型：单项选择题

问题：

某些种类的海豚利用回声定位来发现猎物：它们发射出滴答的声音，然后接收水域中远处物体反射的回音。海洋生物学家推测这些滴答声可能有另一个作用：海豚用异常高频的滴答声使猎物的感官超负荷，从而击晕近距离的猎物。以下哪项如果为真，最能对上述推测构成质疑( )。

A．海豚用回声定位不仅能发现远距离的猎物，而且能发现中距离的猎物

B．作为一种发现猎物的讯号，海豚发出的滴答声，是它的猎物的感官不能感知的，只有海豚能够感知，从而定位

C．海豚发出的高频讯号即使能击晕猎物，这种效果也是很短暂的

D．蝙蝠发出的声波不仅能使它发现猎物，而且这种声波能对猎物形成特殊刺激，从而有助于蝙蝠捕获它们

考点：地方公务员行政职业能力测试辽宁省公务员考试行政职业能力测试真题2007年

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