发动机怠速运转，离合器出现异响，用脚勾起离合器踏板，有回程，

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问题单项选择题

发动机怠速运转，离合器出现异响，用脚勾起离合器踏板，有回程，且声响消失，则应检查离合器的（）是否弹力不足、折断或者脱落。

A、踏板回位弹簧

B、分离轴承回位弹簧

C、压盘压紧弹簧

D、摩擦片减震弹簧

答案

参考答案：A

单项选择题

不能采用普通干粉类灭火剂扑救的火灾是（）。

A.A类

B.B类

C.C类

D.E类

单项选择题

[听力原文]6-7

M: Thank goodness! We’ve finished doing the assignment before our afternoon class. Oh, I’ m so hungry!

W: So am I. It’s lunch time already. Let’s go to the school dining hall.

M: Oh, no, not me.

W: Why not The food is good and it’s not as expensive as the small restaurant next door.

M: It’ s not that. You see. I’ m not good at collecting my own food and drink. And every time I would drop something on myself or other people.

W: I can help you.

M: No, thanks. You see, Mom has made me a sandwich. All I need is a glass of water.

what is the boy going to do （）

A．To go to the school dining hall with the girl.

B．To eat the sandwich his mother has made for him.

C．To have lunch with the girl at the restaurant.

D．To drink a glass of water only.