题目内容

晶闸管相比二极管多了一个（）极。

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晶闸管的门极只能控制器件的导通，无法控制器件的（）。

晶闸管是半控型器件（）

A. 对
B. 错

正向物流和逆向物流在预测容易程度方面，企业正向物流需求端的需求预测困难度比逆向物流大。

A. 对
B. 错

[音频]A: Matthew, do you know much about body language in countries around the world?M: Sure. I’ve picked up a few things from travelling around for work.A: Well, I had a meeting today with a woman from Japan and she wouldn’t stop bowing! I didn’t know what to do!M: Did you bow back?A: No, I tried to __her hand , but her hand was so limp I was a bit offended.M: Well, Japanese businessmen and women typically bow to greet each other in Japan. She mighthave been offended by your strong handshake.A: But she is in America! Shouldn’t she have known that strong handshakes in America signifyconfidence and respect?M: Things are different in Japan. You know, in some countries, making _ with others is considered rude.A: Is that why she wouldn’t look at me in the meeting?M: I think it’s highly possible, yes.A: The meeting really didn’t go down well at all. I think I need to read up about interculturalcommunication before I have another ______ with someone from another country.M: That’s a good idea. When you don’t know much about other cultures, the simplest thing canoffend someone.A: That’s so true. It’s great that we see eye to eye on this.