A、Reflected electron
B、Electrical radiation
C、Quarterpoint electrical navigation
D、Hyperbolic radio navigation
更多“Loran-C is which type of system（）.”相关的问题
A、A.on loran charts covering areas where sky waves are used B、B.in the Radio Aids to Navigation，PUB 117 C、C.in the Loran-C Correction Tables D、D.Sky waves cannot be matched to ground waves in LORAN-C to produce a usable reading
A、only accurate during daylight hours B、much less accurate C、only accurate at twilight D、more accurate than using ground waves
A、A.Less signal energy is necessary for receiver operation B、B.More signal energy is available at the receiver C、C.It significantly increases the peak power D、D.It increases the signal capacity
A、An atomic time standard B、Daylight Savings Time C、Eastern Standard Time D、Greenwich Mean Time
A、The bottom samples and fathometer reading prove the loran fix is reliable B、The bottom samples and fathometer readings indicate that the loran fix is unreliable C、The information collected indicates that the fathometer may be in error D、The information collected indicates that the chart is most likely in error
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
A、The current is flooding B、You are being set to the left of the track C、The set is towards the southwest D、The drift is 0.6 knot.
A、Bell alarm to warn the user B、Lighted alarm signal to warn the user C、Alternate signal keying system D、View finder for each station
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