X2AP的SN STATUS TRANSFER由()发送给()用来传送在切换过程中的上行/下行PDCPSN和HFN状态。
参考答案:源eNB、目标eNB
颗粒级配的常用单位是()。
A、cm3
B、g
C、kg/m3
D、1%
All self-propelled vessels on an international voyage must be equipped with how many Emergency Position Indicating Radiobeacons (EPIRB)()?
A.One approved Class A EPIRB
B.Two approved Class A EPIRBs
C.One approved Class B EPIRBs
D.Two approved Class B EPIRBs