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【单选题】
在MF2187.5kHz上接收到一个DSC遇险呼叫，下面的哪一项描述不正确？（）
A.
接收到遇险呼叫立即转发；
B.
如果不是在A1、A2海区，附近接收到遇险呼叫的一条船舶要发送一遇险收妥；
C.
遇险船和救助船一般转到MF2182kHz上进行遇险通信；
D.
如果遇险船遇险呼叫后续通信无线电传，到MF2174.5kHz上用NBDP方式进行遇险
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