單項(xiàng)選擇題The joint formed when two steel plates are placed end-to-end is called a().

A.bevel
B.seam
C.butt
D.bond


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1.單項(xiàng)選擇題The inner bottom is the().

A.tank top
B.compartment between the tank top and shell of the vessel
C.inner side of the vessel's shell
D.space between two transverse bottom frames

2.單項(xiàng)選擇題The flood stream here is at an average rate of 0.8().

A.cables
B.miles
C.kilometers
D.knot

3.單項(xiàng)選擇題The construction portfolio may be included as part of the ship().

A.general plans
B.operating manual
C.builders documentation
D.CCS file

4.單項(xiàng)選擇題The circular steel structure installed around the propeller of a towboat is the().

A.nozzle
B.shroud
C.strut
D.hood

5.單項(xiàng)選擇題The bow thruster generally is ineffective at().

A.over 3 knots headway
B.at any speed astern
C.at any speed ahead
D.over 1 knot sternway