A.黑柱体
B.黑球体
C.黑锥形体
D.黑菱形体
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最新试题
The captain passes the pilot’s orders to the third officer.()
They are towed into positions and anchored there.()
Ships can be classified according to what they carry.()
A ship is made fast to the quayside by mooring lines. ()
The pilot will board our ship in an hour.()
When a ship arrives at a foreign port ,for the safety of the ship ,the ship usually needs a pilot to take her into and out of the harbour ,or through the canal.()
Pull it up slowly and don’t knock it against the hull.()
Liners sail on regular routs and keep to a fixed timetable.()
The meaning of Flag H is “I have a pilot on board”.()
Bring here a hammer, an oil can and some goggles.()