( 36)frequencies available for use at any time in the specified rang. Devices using (37)spread spectrum(DSSS )communicate by (38)each byte of data into several parts and sending them concurrently on different(39). DSSS uses a lot of the available(75), about 22megaherts( MHz) (36A、 continuous high C D、 discrete (37)A、dret- sequence B、 discreet- equence C、 duplicate- sequence D、 dedicate-sequence (38)A、 splitting B、 combining C、 packing D、 compacting (39)A、 bits B、 frequencies C、 packets D、 messages (40)A、 rate B、 velocity C、 bandwidth D、 period 答案: AAABC(36)frequencies available for use at any time in the specified rang.Devices using (37)spread spectrum(DSSS)communicate by (38)each byte of data into several parts and sending them concurrently on different (39).DSSS uses a lot of the available (75),about 22megaherts(MHZ). (36)A、continuous B、high C、low D、discrete (37)A、direct-sequence B、discrect-sequence C、duplicate-sequence D、dedicate-sequence (38)A、splitting B、combining C、packing D、compacting (39)A、bits B、frequencies C、packets D、messages (40)A、rate B、velocity C、bandwidth D、period 答案：AAABC