皮皮学，免费搜题
登录
搜题
【多选题】
关于气压制动制动传动装置下列说法正确的是()。A.
空气压缩机的作用是产生压缩空气，是气压制动整个系统的动力源
B.
调压阀可使空气压缩机卸荷空转，以减少发动机功率损失
C.
制动控制阀控制从贮气筒进入制动气室和挂车制动阀的压缩空气
D.
制动气室是将输入的空气转变为制动凸轮的机械力。
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】Because of the economic slump, there are only ______ on the beach as before.
A.
one-fifth tourists as many
B.
one-fifth as many tourists
C.
tourists one-fifth as many
D.
tourists as one-fifth many
【单选题】of the students boys in our class. [ ]
A.
One fifth; are
B.
One fifths; are
C.
First fifths; is
D.
One five; is
【单选题】About_______ of the books in our school library________ written in English.
A.
one-fifth, are
B.
one-fifths, is
C.
one-fifth, is
D.
first-fifth, are
【简答题】A．About one half. B．About one third. C．About one fourth. D．About one fifth.
相关题目：
参考解析：
知识点：
题目纠错 0
发布
