单选

In order to insure that the racon signal is visible on your 3 cm radar, the ______.

A.10 cm radar should be placed on stangby or turned off
B.gain control should be turned to maximum
C.radar should be stabilized, head up
D.rain clutter control should be off but, if necessary, may be on low

试题出自试卷《甲类三副(航海英语)模拟试题2》

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