带上最大应力发生在( )的接触处。A．松边与大轮 B．松边与小

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问题单项选择题

带上最大应力发生在( )的接触处。

A．松边与大轮

B．松边与小轮

C．紧边与大轮

D．紧边与小轮

答案

参考答案：D

解析：[提示] 传动带上最大应力发生在紧边与小轮的接触处。

阅读理解

阅读理解。

Mike: Hello.

Chen: Hello. This is your brother, Chen Jie. How's everybody?

Mike: Just fine. Mom is doing the dishes. Sister is reading a book. My father is listening to music.

Chen: What about your little brother? Can I speak to him, please?

Mike: Sure. Hold on please. He is doing homework.

Chen: Thank you.

A) Answer the questions. 请回答下面的问题。

1. What is Mike's mother doing?

2. What is Mike's sister doing?

B) Read and judge. 判断下面说法是否正确，正确的写“T”，错误的写“F"。

( ) 1. Mike is doing homework.

( ) 2. Mike's mother is doing the dishes.

填空题

修正板有R记号的是（）（填枪1或枪2）修正板。