×
单选题
Vacuum subsystems are those units and components used to generate, deliver and regulate below atmospheric pressure air, including pumps, regulators, lines, etc., through and including the manifold.
A
A.真空子系统是指用于产生、输送和调节高于大气压的空气的装置和部件，包括泵、调节器、管线等，该子系统还包括歧管。
B
B.真空子系统是指用于产生、输送和调节低于大气压的空气的装置和部件，包括泵、调节器、管线等，但该子系统并不通过和包括歧管。
C
C.真空子系统是指用于产生、输送和调节低于大气压的空气的组件和部件，包括泵、调节器、管线等以及总管和流经总管的部件。
答案解析
正确答案：C
相关知识点：
真空子系统部件全记住
相关题目
单选题
Before you do servicing of the hydraulic system, isolate it.
单选题
Make sure that you do not cut the control cable.
单选题
Do these two steps at the same time.
单选题
Put on goggles to prevent injury to your eyes.
单选题
Soak the element for four hours.
单选题
Rub the surface with a clean cloth.
单选题
If there is no contamination, start the operation again.
单选题
An incorrect connection will cause damage.
单选题
The metering plug decreases the fuel flow.
单选题
Put the removed part on a clean surface.
