你可能感興趣的試題

A fire starting by spontaneous combustion can be expected in which condition?（）.

A.Paints, varnish, or other liquid flammables are stowed in a dry stores locker
B.Inert cargoes such as pig iron are loaded in a wet condition
C.Oily rags are stowed in a metal pail
D.Clean mattresses are stored in contact with an electric light bulb

單項(xiàng)選擇題

A floating vessel will behave as if all of its weight is zcting downward through the（）.

A.center of gravity
B.center of buoyancy
C.center of flotation
D.metacenter