汽车行驶系的作用？
（ 1）支承汽车的总质量；
（ 2）将传动系传来的扭矩转化为汽车行驶的驱动力；
（ 3）承受并传递路面作用于车轮上的各种反力和力矩；
（ 4）减少振动，缓和冲击，保证汽车的平顺行驶。
暂无解析
Whiledoingcalculationfortheproject,thedesigners____anewsolutiontoageologicalproblem.
“Whatcoursesareyougoingtodonextsemester”
“Idon’tknow.Butit’sabouttime_____onsomething.”
Whichfactorpusheduphouseprices?
____youwerebusy,Iwouldn’thavebotheredyouwithquestions.
PartIVTranslation
Itwouldhavebeendifficultforthemtoavoidtheconclusionthatthehorseandmulepopulationwoulddeclinerapidly.(PassageFour)
