單項(xiàng)選擇題Because the tie bolts are so close to the crankshaft, some engines employ （）to hold the crankshaft main bearing cap in position instead of conventional studs and nuts.

A.through bolts
B.jack bolts
C.tap bolts
D.fitted bolts


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1.單項(xiàng)選擇題To prevent excessive （） in the transverse girders, the tie bolts are positioned as close to the center of the crankshaft as possible.

A.thermal stresses
B.bending moments
C.thermal loads
D.surface tensions

2.單項(xiàng)選擇題The A-frames carry the crosshead guides and support the engine （）.

A.foundation
B.seating
C.entablature
D.bedplate

3.單項(xiàng)選擇題Basically the bedplate consists of two （）, which run the length of the engine.

A.longitudinal girders
B.transverse girders
C.fore girders
D.aft girders