The burning of the fuel adds more heat to the air charge causing it to expand and force the engine piston to do work on the crankshaftWhat does “it” mean in this sentence?()
时间:2019-12-10 00:00:08 关键词:air,to,heatThe burning of the fuel adds more heat to the air charge, causing it to expand and force the engine piston to do work on the crankshaftWhat does “it” mean in this sentence?()
A.the burning
B.the fuel
C.the air charge
D.the engine pisto
答案解析
C
举一反三