（） are generally formed in the frame of the both in-line and Vee engines to give maintenance access to the crankshaft main and connecting rod large end bearing.

A.Bulbs
B.Bulks
C.Flyweights
D.Flywheels

A．Frame
B．Bedplate
C．Cylinder
D．Liner

A.“prepare to stop the engine”
B. “assemble an engine on its bedplate”
C. “make an engine ready for starting”
D. “dismantle an engine”