单项选择题
A.outside B.out of C.run out D.made of
At sea, we can use（）to fix the ship’s position.A.steeri...
单项选择题At sea, we can use（）to fix the ship’s position.
A.steering gear B.Loran C.rudder indicator D.log
What does “VHF” stand for?（）A.echo sounderB.radarC.dire...
单项选择题What does “VHF” stand for?（）
A.echo sounder B.radar C.direction finder D.radiotelephone
There are some navigational instruments（）.A.in bridgeB....
单项选择题There are some navigational instruments（）.
A.in bridge B.on the deck C.in the radio room D.on the hold
