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【简答题】
误码率的计算公式为Pe=Ne／N，其中Ne表示（ ）。
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皮皮学刷刷变学霸
举一反三
【单选题】A vessel which detects ______ the presence of another vessel shall determine if a close-quarters situation is developing and /or risk of collision exits.
A.
by radar alone
B.
by long-range scanning
C.
by systematic observation
D.
by all available means
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【简答题】电影战狼2中博士女儿是怎么回事?
【单选题】In restricted visibility, a vessel which detects by radar alone the presence of another vessel shall determine if a close quarters situation is developing or risk of collision exists.If so, she shall ...
A.
sound the danger signal
B.
when taking action, make only course changes
C.
avoid altering course toward a vessel abaft the beam
D.
all of the above
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