A、their free-floating design
B、their relatively small size
C、the reciprocating motion of the piston
D、their position in the lubrication system
更多“Wristpin bearings are difficult to lubricate because of their oscillating motion and（）”相关的问题
A、若辅助寄存器AR0的值为0X0010H，AR3的值为0X0310H，循环缓冲起始地址为0300H，BK=31，请分别给出下列寻址方式修改后的辅助寄存器的值。 B、①*AR3+% C、②*AR3+0% D、③*AR3-0% E、④*AR3+0B F、⑤*AR0（0100H）
A、the block bearing B、the camshaft bearing C、the connecting rod small end bearing D、the connecting rod large end bearing
A、A.Piston wrist pin bushing B、B.turbine bearing C、C.Spring bearing D、D.Diesel engine main bearing
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