a blast of from five to seven seconds' duration
a blast of from five to six seconds' duration
a blast of from four to six seconds' duration
a blast of from six to seven seconds' duration
第1题：
●The term, (74) loop, refers to a loop that is contained within another loop.
(74)A.program
B.nested
C.statement,
D.Network
第2题：
The term LEE SHORE refers to the ______.
A.shore on the lee side of the vessel
B.shore that is in the lee
C.western shore of the Lesser Antilles
D.shore in a harbor of refuge
第3题：
A、Charge card
B、Credit card
C、A and B only
D、Charge card
第4题：
The term dialect,as a technical term in linguistics,carries value judgement and not simply refers to a distinct form of language.
第5题：
The term dialect,as a technical term in linguistics,carries value judgement and not simply refers to a distinct form of language.
A对
B错
第6题：
On the high seas，a fog signal consisting of one prolonged blast followed by four short blasts would indicate the presence of a ______.
A.vessel being towed
B.fishing vessel engaged in trawling
C.vessel at anchor warning you of her location
D.power-driven pilot vessel on station underway
第7题：
Which term refers to a transverse curvature of the deck ________．
A.Deadrise
B.Camber
C.Freeboard
D.Flare
第8题：
In credit mix, tenor refers to ______.
A．term of loan
B．term structure of loan
C．term of asset
D．term structure of asset
第9题：
prolonged blast（）
第10题：
One blast at one-minute intervals
One blast at two-minute intervals
Two blasts at one-minute intervals
One prolonged and two short blasts at two-minute intervals