for precise navigation in coastal waters
by measuring the phase difference of the dots and dashes
as an aid to ocean navigation
if the vessel is fitted with a special Consol receiver
第1题：
Loran-C is which type of navigation system ________．
A.Hyperbolic，long-range navigation system
B.Short-range electronic
C.Long-range，high frequency navigation system
D.Long-range，with a frequency of 1950 kHz
第2题：
第3题：
此题为判断题(对，错)。
第4题：
Language is a system of a（）vocal symbols used for human communication.
第5题：
Which two commands are used during the password recovery process?（）
第6题：
Loran-C is which type of system ________．
A.Reflected electron
B.Electrical radiation
C.Quarterpoint electrical navigation
D.Hyperbolic radio navigation
第7题：
第8题：
The only cylindrical chart projection widely used for navigation is the ______.
A.Lambert conformal
B.Mercator
C.azimuthal
D.gnomonic
第9题：
CONSOL的中文意思是操作站。
第10题：
Which command is used by the system boot process to determine what resources are available to the system？（）