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单选题
The unit of duration of a dash in Morse Code is（）.
A
one and one-half times the length of a dot
B
twice the length of a dot
C
three times the length of a dot
D
four times the length of a dot
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单选题When testing a Class A EPIRB you will know the EPIRB is working properly if you hear on 99.5 Mhz FM or any vacant frequency on a nearby AM radio（）.A
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单选题For self elevating and column stabilized units， is 100% lifeboat capacity acceptable for the MODU Code？（）A
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单选题What does a SART signal sound or look like?（）A
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It will appear on a radar unit's PPI as a line of dots radiating outward with the innermost dot indicating the SART's positionC
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None of the above
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单选题How is a safe water mark，that can be passed close aboard on either side，painted and lighted?（）A
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Black and red stripes with an interrupted quick flashing lightD
Red and white stripes with a Morse (A) light
考题
单选题Any person maintaining a listening watch on a bridge to bridge radio-telephone must be able to（）.A
Speak EnglishB
Repair the unitC
Speak SpanishD
Send Morse code
考题
单选题You are scanning the radar screen for a buoy fitted with racon. How should this signal appear on the PPI display?（）A
Starting with a dash and extending radially outward from the targetB
As a broken line from center of PPI to the targetC
Starting with a dot and extending radially inward from the targetD
Starting with a dash and extending to the right of the target
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