单选题The gas loads on the engine structure are constrained by means of hydraulically preloaded （） which connect the bed plate, frame sections and cylinder jackets into a single unit.Aconnecting rodsBmain bearingCcolumnDtie rods
单选题
The gas loads on the engine structure are constrained by means of hydraulically preloaded （） which connect the bed plate, frame sections and cylinder jackets into a single unit.
A
connecting rods
B
main bearing
C
column
D
tie rods
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