国家开放大学

1. 切削用量是 (1) 、 (2) 和 (3) 三者的总称。 答案：1：切削速度；2：进给量；3：背吃刀量 2. 影响刀具耐用度的因素主要有 (1) 、 (2) 和 (3) 等。 答案：1：工件材料；2：刀具材料；3：切削用量 3. 刀具磨损形式分为 (1) 和 (2) 两大类。 答案：1：正常磨损；2：非正常磨损 4. 切削运动包括 (1) 运动和 (2...

1. 工艺基准可分为下述几种：（1） (1) ，（2） (2) ，（3） (3) ，（4） (4) 。 答案：1：装配基准；2：测量基准；3：工序基准；4：定位基准 2. 夹紧装置的组成包括： (1) 、 (2) 、 (3) 。 答案：1：力源装置；2：传力机构；3：夹紧元件 3. 生产中最常用的正确的定位方式有 (1) 定位和 (2) 定位两种。 答案：1...

1. — Hello, I'm David Chen. Nice to meet you. — ( ). A. Are you? B. Nice to meet you too. C. Very nice. 2. — Sally, ( ) , Mary Brown. — Nice to meet you. I'm Sally Johnson, the Sal...

1. — I'd like to apply for a library card. — ( ) A. Are you a student? B. With pleasure. C. Fill out the application form first, please. 2. — It's rather cold in here. Do you mind ...

1. — ( ) — I'm not sure what I'll do. I hope to watch TV and enjoy myself. A. What are you doing? B. Where are you going? C. What are your plans for summer vacation? 2. — We'll hav...

1. — I'd like to invite you for dinner on Saturday. — ( ) A. Thank you for your kind invitation. I'll be there on time. B. Fine. Everything went smoothly. Thanks. C. I am going to ...

1. — Would you mind helping me for a minute, Barbara? — _________________What do you want me to do? A. Yes, I do. B. I'd be glad to. C. Sorry, I have no time. 2. — I would like to ...

1. — Hello, this is John speaking. Could I speak to Mike? — ( ) A. Of course you can. B. Hold the line, please. C. Sorry, who is Mike? 2. — May I speak to Tom? — I'm sorry. He isn'...

1. — Can you copy these papers for me? — ( ) A. It doesn't matter. B. Ok. Just wait a moment please. C. But I'm not sure. 2. — I've got the system running, but I can't open my file...

1. — Good morning, can I help you? — ________________ A. No, I just have a look around.` B. Yes, of course you can. C. I'd like to borrow a book named Gone With the Wind from your ...