单项选择题
A.off／standby B.standby／off C.standby／close D.close／standby
The common way to obtain your ship’s position is（）.A.ke...
单项选择题The common way to obtain your ship’s position is（）.
A.keeping a close watch and lookout B.taking a radar range and bearing C.observing a radar target and listening to signals D.keeping a well clear caution
The closest point of approach (CPA) of a contact on a r...
单项选择题The closest point of approach (CPA) of a contact on a relative motion radar may be determined（）.
A.immediately when the contact is noted on radar B.only if the radar scope is watched constantly C.after the contact has been marked at least twice D.by an occasional glance at the radar
The articulated light is superior to other types of buo...
单项选择题The articulated light is superior to other types of buoys because（）.
A.the radar reflectors reflect better signals B.fog horn signals travel farther to sea C.it is equipped with strobe lights D.it has a reduced watch circle
