单项选择题
A.salinometer B.thermometer C.tachometer D.micrometer
The development of （） has kept pace with the increasing...
单项选择题The development of （） has kept pace with the increasing demands made by the steady rise in power produced by modem marine diesels.
A.water B.fresh air C.oils D.gases
The design of the connecting rod large end bearing is s...
单项选择题The design of the connecting rod large end bearing is similar to that of the mainbearings Whats the meaning of "that" in the sentence above?（）
A.the connecting rod B.large end bearing C.the main bearing D.the design
The design of （） is similar to that of the main bearing...
单项选择题The design of （） is similar to that of the main bearing.
A.the block bearing B.the camshaft bearing C.the connecting rod small end bearing D.the connecting rod large end bearing
