（）的作用是将柴油雾化成较细的颗粒，并把它散布到燃烧室中。
A.调速器
B.喷油器
C.化油器
D.喷油泵
参考答案：B
Which of the following statements is true of dyslexia a. It is a worldwide problem. b. It is a regional problem. c. It is a social problem. d. It is a biological problem.
电器触头的磨损有三种形式，即机械磨损、化学磨损和电磨损。
