Such an engine frame helps （） the engine and so protect the bearings from the deformation forces transmitted via the ships double bottom.

A.prepare to stop the engine
B.assemble an engine on its bedplate
C.make an engine ready for starting
D.make an engine run steadily

A.through bolts
B.turbo-chargers
C.bed plates
D.columns

A.through bolts
B.dividing walls
C.sloping surfaces
D.relative angles