A radio determination system based on the comparison of reference signals with radio signals reflected,or retransmitted from the position to be determined,is().
- ADF
- BRadar System
- CDSC System
- DCOSPAS-SARSAT
A radio determination system based on the comparison of reference signals with radio signals reflected,or retransmitted from the position to be determined,is().
1、The expansion valve on a Freon system
The expansion valve on a Freon system controls the ().Asuperheat of the gas leaving the compressorBback pressure in the evaporatorCtemperature of the iceboxDsuperheat of the gas leaving the evaporator
2、A polyconic projection is based on a (
A polyconic projection is based on a ().Aplane tangent at one pointBcylinder tangent at one parallelCcone tangent at one parallelDseries of cones tangent at selected parallel
3、The ONS 15216 is a 32-channel system.
The ONS 15216 is a 32-channel system. The ONS 15216 OADMs are capable of adding and dropping one, two, or four channels. How are the OADMs ...
4、A system administrator notices that on
A system administrator notices that one of the mirrored disks, hdisk7 on datavg, has had a hardware failure. What is the best method of recov...
5、If a fixed foam firefighting system on
If a fixed foam firefighting system on a ship is not of the premix type,a sample of the foam liquid must be tested by().Aa Coast Guard i...
6、Based on the description of a lahar de
Based on the description of a lahar deposit, how do clasts and matrix particles differ in size?AAny clast is larger than the largest matrix p...