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超声检查用藕合剂的目的是为了保证探头移动顺利。( )
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关于超声探头,叙述正确的有A、发射超声波是超声换能器的逆压电效应B、接收回声信号是换能器的压电效应C、单层匹配层可提高宽频探头的信噪比D、超声耦合剂可使探头与检查部位匹配良好E、超声探头使用时要避免摔碰、折断导线
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8、超声检查时涂抹耦合剂的原因是() The reason why the coupling agent is applied during ultrasonic examination is that()A.降低人体温度 Reduce body temperatureB.减少探头移动的阻力 Reduce the resistance when the probe movesC.排除探头和皮肤之间的空气 Remove air between the probe and skinD.消毒 Disinfect
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3、超声检查时涂抹耦合剂的原因是() The reason why the coupling agent is applied during ultrasonic examination is that()A.降低人体温度 Reduce body temperatureB.减少探头移动的阻力 Reduce the resistance when the probe movesC.排除探头和皮肤之间的空气 Remove air between the probe and skinD.消毒 Disinfect
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