【名词&注释】
测量误差(measurement error)、铁路局(railway administration)、频率稳定度(frequency stability)、铁道部(ministry of railway)、铁路车辆制造(railway rolling stock manufacturing)、屏蔽线(shielded)、光导纤维、温度计测(temperature gauge)
[单选题]THDS探测站无线发射设备工作频率为(),频率稳定度为±510-6Hz/8h.
A. 458.575MHz/468.575MHz
B. 458.575MHz/478.575MHz
C. 448.575MHz/468.575MHz
D. 448.575MHz/468.575MHz