题目内容

词汇与结构The engine driven pumps are used in main hydraulic ________ systems.

A. force
B. electric
C. power
D. energy

查看答案

搜索结果不匹配？点我反馈

更多问题

词汇与结构A ________ is a screening or straining device used to clean the hydraulic fluid.

A. filter
B. filler
C. flier
D. fighter

词汇与结构A hand pump is the simplest pump which is operated ________ for emergency use in some light airplane.

A. manually
B. automatically
C. differently
D. completely

词汇与结构If such material is not removed, it may cause the entire hydraulic system of the aircraft to fail through the breakdown or ________ of a single unit of the system.

A. functioning
B. function
C. malfunctioning
D. malfunctioned

词汇与结构When one of the actuating units has been operated and pressure in the line between the pump and selector valve builds up to the desired value, a ________ in the pressure regulator automatically opens.

A. valve
B. valid
C. variety
D. value