【单选题】自动变速器冷油器的作用是,使高温油液在水箱内与冷却水或在散热器内与空气进行热量交换,保持油温为()℃。
【单选题】We mustn't buy things we _____ (a)needn't (b)need not (c)don't need (d)haven't need
【简答题】Manufacturers need to be more s to the needs of consumers.
【单选题】自动变速箱变扭器内锁止离合器的作用是()
【单选题】ω-6 不饱和脂肪酸的主要作用为? ( ) [单选题] *
【单选题】Modern manufacturers, who need reliable sources of materials and technologically advancedcomponents to operate profitably, face an increasingly difficult choice between owning theproducers of these it...
A.
improvement in the management of overhead expenses
B.
enhancement of profit margins on sales of components
C.
simplification of purchasing and marketing operations
D.
reliability of a source of necessary components
E.
elimination of unnecessary research efforts
【多选题】以下关于对自动变速箱描述正确的是
B.
722.9 变速器电脑位于阀板上,侵泡在油液中
【多选题】自动变速箱相比手动变速箱的优点()。
A.
消除了离合器的操作和频繁的换档,使驾驶简单,省力,提高行车的安全性
B.
能自动适应行车阻力的变化,提高汽车的动力性和平均车速
C.
汽车起步、加速更加平稳,能吸收和衰减换档过程中的振动和冲击,提高乘坐的舒适性
D.
因采用液力传动,发动机和传动系是“弹性”连接,能减缓结合冲击,减轻传动系的负担,有利于延长有关零部件的使用寿命
E.
可避免因外界负荷突增而造成发动机熄火的现象,提高燃油经济性,降低排气污染
【简答题】Manufacturers currently are working to establish industry standards for digital t______ and reception of the signals.
【多选题】ZF自动变速箱停车自动回空档功能起作用的条件是()。