第九章 自动变速器：为满足车辆行驶不同转矩的要求，需要使用特别设计的齿轮箱，称为变速器。若在行驶时能自动换挡而不需要离合器踏板控制，则称为自动变速器。9.1变速器的作用:变速器的作用之一是改变速度和转矩。另一个作用是完成倒车和驻车。[单选题]What tells the automatic transmission how fast the car is going? （ ）。 选项:[The gear pump
9.2自动变速器主要部件:现代自动变速器由许多部件和系统组成，这些部件和系统被设计成由行星齿轮组、液压系统、密封和垫片、液力变矩器及计算机控制系统组成的协调系统。
, The sump
, The governor
, The turbine
]
[单选题]In an automatic transmission, the shift lever hooks up to the（ ）。 选项:[vacuum modulator
, inlet valve
, manual valve
, throttle valve
]
[单选题]Which statement is wrong about AT? （ ）。 选项:[The hydraulic system which uses a special transmission fluid sent under pressure by an oil pump through the valve body to control the clutches and bands in order to control the planetary gear sets
, The torque converter which acts like a clutch to allow the vehicle to come to a stop. in gear while the engine is still running
, The governor and the modulator or throttle cable that monitors speed and throttle position in order to determine when to shift
, Planetary gear sets which are the mechanical systems that only provide the various forward gear ratios
]
[单选题]Which part sends transmission fluid under pressure to all parts of the transmission and torque converter?（ ）选项:[One-way clutch
, Hydraulic system
, Oil pump
, Planetary gear sets
]
[单选题]Which section is the brain of the automatic transmission that directs hydraulic fluid to the numerous valves?（ ）选项:[Valve body
, Oil pump
, Planetary gear sets
, Torque converter
]
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