[单选题]Ballast water can only be（）in cargo tanks in exceptional cases where the particular character of the operation of an oil tanker renders it necessary to carry ballast water in excess of the quantity required，provided that such operation of the oil tan
[单选题]If a vessel is sagging，what kind of stress is placed on the sheer strake?（）A . CompressionB . TensionC . ThrustD . Racking
[单选题]The floors in a vessel’s hull structure are kept from tripping，or folding over，by（）.A . face platesB . bottom longitudinalsC . longitudinal deck beamsD . transverse deck beam
[单选题]Deck beams on a vessel are generally spaced at equal intervals and run（）.A . longitudinallyB . verticallyC . transverselyD . intermittently
[单选题]Keel scantlings of any vessel are greatest amidships because（）.A . connections between forebody and afterbody are most crucialB . of maximum longitudinal bending momentsC . of severest racking stressesD . resistance to grounding is at a maximum amids
[单选题]The garboard strake is the（）.A . raised flange at the main deck edgeB . riveted crack arrester strap on all-welded shipsC . riveting pattern most commonly used in ship constructionD . row of plating nearest the keel
[单选题]船舶装载轻货时，主要考虑船体的（）。A .横强度B .纵强度C .局部强度D .扭转强度
[单选题]A cofferdam is（）.A . any deck below the main deck and above the lowest deckB . a member that gives fore-and-aft strengthC . made by placing two bulkheads a few feet apartD . a heavy fore-and-aft beam under the deck
[单选题]Aboard ship，vertical flat plates running transversely and connecting the vertical keel to the margin plates are called（）.A . floorsB . intercostalsC . girdersD . stringer
[单选题]When a vessel’s LCG is aft of her LCB，the vessel will（）.A . trim by the sternB . trim by the headC . be on an even keelD . be tender
[单选题]杂货船营运中主要应考虑的船舶强度为（）。①总纵强度；②扭转强度；③局部强度；④总强度；⑤横强度。A .①③B .①②③C .①②③④D .①②③④⑤
[单选题]A vessel having continuous closely spaced transverse strength members is（）.A . longitudinally framedB . transversely framedC . cellular framedD . web framed
[单选题]按照船舶所受外力分布的走向和船体结构变形的方向不同，将船舶强度分为（）。A .纵强度、横强度和局部强度B .总强度、局部强度和扭转强度C .总强度、扭转强度和纵强度D .横强度、扭转强度和纵强度
[单选题]What provides the majority of strength to an aluminum-sided container?（）.A . Corner fittingsB . Framework，primarily the corner postsC . Framework and siding acting as a girderD . Aluminum side and end panel
[单选题]按照船舶所受外力的分布和船体结构变形范围的不同，将船舶强度分为（）。A .纵强度和横强度B .总强度和局部强度C .总强度和扭转强度D .横强度和扭转强度
[单选题]船舶结构抵抗各种内力和外力作用的能力称为（）。A .浮性B .稳性C .船体强度D .船舶抗沉性