單項選擇題

All of the following information concerning lighted aids to navigation may be read directly from the Light List EXCEPT the（）.

A.location
B.height of light above water
C.luminous range
D.light characteristics

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單項選擇題

All of the following are part of the fire triangle EXCEPT（）.

A.fuel
B.electricity
C.oxygen
D.heat

單項選擇題

All Loran-C transmitting stations are equipped with cesium frequency standards which permit （）.

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