The length of the steering oar in a lifeboat is().
A、shorter than the rowing oars
B、the same length as the rowing oars
C、longer than the rowing oars
D、unrelated to the length of the rowing oars
A、shorter than the rowing oars
B、the same length as the rowing oars
C、longer than the rowing oars
D、unrelated to the length of the rowing oars
A、one and one-half times the length of a dot B、twice the length of a dot C、three times the length of a dot D、four times the length of a dot
A、the length between perpendiculars B、the registered length C、the length overall D、the length of waterplane on summer draft
A、right at the bow B、one-third the length of the vessel from the bow C、one-half the length of the vessel from the bow D、two-thirds the length of the vessel from the bow
A、length of the crankshaft B、volume of the clearance space C、weight of piston D、length of the stroke
A、A.right at the bow B、B.one-third the length of the vessel from the bow C、C.one-half the length of the vessel from the bow D、D.two-thirds the length of the vessel from the bow
A、about one-quarter of the vessel's length from the stern B、at the bow C、about one-third of the vessel's length from the bow D、aft of the propellers
A、of the wave's crest B、of the wave's trough C、measured from crest to trough D、measured from crest to crest
A、the names of crew members who participated in the drill B、the length of time that each motor propelled lifeboat was operated in the drill C、the length of time the lifeboat was in the water D、the time it took to lower the boat
A、greater at the bow and stern B、reduced at the bow and stern C、uniform over the length of the vessel D、uniform over the length of the vessel,with the exception of the machinery spaces,where it is reduced due to increased stresses