A.10Hz
B.50Hz
C.100Hz
D.1000Hz
E.1MHz
[单选题]超声诊断仪典型的脉冲重复频率为A.10HzB.50HzC.100HzD.1000HzE.1MHz
[单选题]超声诊断仪典型的脉冲重复频率为A.10HzB.50HzC.100HzD.1000HzE.1MHz
[单选题]调制中频电流的调制波的频率通常是A.l~10HzB.l~50HzC.1~100HzD.1~150HzE.10~200Hz
[单选题]超声仪典型的脉冲重复频率为()。A . 1HzB . 10HzC . 100HzD . 1000HzE . 1MHz
[单选题]超声仪典型的脉冲重复频率为( )。A.1HzB.10HzC.100HzD.1000HZE.1MHz
[单选题]超声仪典型的脉冲重复频率为( )。A.1HzB.10HzC.100HzD.1000HZE.1MHz
[单选题]超声仪典型的脉冲重复频率为()A.1HzB.10HzC.100HzD.1000HzE.1MHz
[单选题]超声仪典型的脉冲重复频率为()A.1HzB.10HzC.100HzD.1000HzE.1MHz
[单选题]计算机供电电源的频率应满足()。A.40HZB.50HZC.60HZD.70HZ
[单选题]超声的声波频率应大于A.2000HzB.20000HzC.50000HzD.5000HzE.10000Hz