單項(xiàng)選擇題

When communicating on the radiotelephone using plain English，what procedure word indicates the end of my transmission and that a response is necessary? （）

A.Out
B.Over
C.Roger
D.Wilco

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單項(xiàng)選擇題

To reduce the amount of catenary you may（）.

A.shorten the hawser or increase the tug's speed
B.lengthen the hawser or reduce the tug's speed
C.place your tug in irons
D.make a sharp turn

單項(xiàng)選擇題

The Vessel Bridge-to-Bridge Radiotelephone Act applies to which towboat?（）

A.A 100 GT towboat，24 feet in length
B.A 90-foot towboat tied to the pier
C.A 60-foot towboat towing by pushing ahead
D.A 400 GT towboat anchored

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