平地机一级保养时的轮胎标准气压为（）MPA。
A.0.11
B.0.26
C.0.31
D.0.43
参考答案：B
_______ were given to those foreigners who helped the country ______ independence from Britain. [ ]
A. Rewards; gain
B. Awards; make
C. Prizes; take
D. Awards; get
不属于供气系统的部件是（）
A、空气压缩机组
B、制动控制单元BCU
C、空气干燥器
D、主风缸
