All Loran-C transmitting stations are equipped with cesium frequency standards which permit （）.<br>A:every station in one chain to transmit at the same time<br>B:each station to transmit without reference to another station<br>C:on-line transmission of single-line transmitters at the same time<br>D:each station to only depend on the master for synchronization and signal ratio

All Loran-C transmitting stations are equipped with cesium frequency standards which permit （）.
A:every station in one chain to transmit at the same time
B:each station to transmit without reference to another station
C:on-line transmission of single-line transmitters at the same time
D:each station to only depend on the master for synchronization and signal ratio

出自：海船船员证

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