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The line connecting the Loran-C master station with a secondary station is called the ______．
A.Focus line
B.Base line
C.Side line
D.Center line
参考答案
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单选题All Loran-C transmitting stations are equipped with cesium frequency standards which permit （）.A
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单选题The line connecting the Loran-C master station with a secondary station is called the（）.A
Focus lineB
Base lineC
Side lineD
Center line
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单选题Most modern Loran-C receivers，when not tracking properly，have a（n）（）.A
Bell alarm to warn the userB
Lighted alarm signal to warn the userC
Alternate signal keying systemD
View finder for each station
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单选题It is the responsibility of the Master or person in charge of a ship to ensure that（）.A
the Muster List (Station Bill) is posted in each compartmentB
temporary personnel and visitors are advised of emergency stationsC
names of crew members are listed on the Muster List (Station Bill)D
no changes are made to the Muster List (Station Bill)
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单选题It is the responsibility of the Master or person in charge of a ship to ensure that（）.A
the station bill is posted in each compartmentB
temporary personnel and visitors are advised of emergency stationsC
names of crew members are listed on the station billD
no changes are made to the station bill
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