问题
单项选择题
PLC机具有( )，无故障运行时间长的特点。
A．编程复杂
B．对使用环境无要求
C．对使用环境有较高要求
D．运行可靠
答案
参考答案：D
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PLC机具有( )，无故障运行时间长的特点。
A．编程复杂
B．对使用环境无要求
C．对使用环境有较高要求
D．运行可靠
参考答案：D
| 阅读理解。 | |
| BEIJING (AP)-The government is teaching the people "the right way to spit." A college teaches students the right way to sit. Two years before holding the Olympic Games, people across Beijing are on and all-out drive to mind their behavior. Visitors are often surprised to see people in China spit phlegm onto the ground. Changing all that before the 2008 Summer Games is "important in providing a cultural and historical legacy to the world for China," said Beijing city official Zhang Huiguang. "We will work with newspapers, radio stations, TV stations, the Internet and mobile telephones to teach people the right way to spit, said Zhang. Zhang said her office is organizing a "behavioral training" activity that teaches people to line up for buses and turning off mobile phones during meetings. But spitting is the most serious problem. "You have to spit into a piece of paper or a bag, and then put it into a dustbin," she explained. Zhang said her office has organized a small group of volunteers who are going to Beijing's streets to hand out small "spit bags". "Public spitters already face fines up to 50 yuan (about $ 7 Cdn)," Zhang said. Others are taking a softer way. Lu-chin was born near Beijing, married an American and spent 10 years in the U.S. She said her heart sank when she and her family returned to live in her homeland and she saw the spitting, littering and cutting in line. It caused her to start the Pride Institute, a private group that showing the great pleasure of being more polite. "I'm trying to wake up a sense of decency. I know it's there. I saw our beautiful scenery covered with plastic bags. Sometimes I think I'm the first one to see this and say, 'Why do you treat our country like a dustbin?' I'm just trying to wake them up and show them they can stop the bad behavior." Still others are trying to improve things in a far more traditional way. "All of China is looking forward to the Olympics," said Zhang Hui, head of training at the Beijing Courtesy College. "It's really important to improve courtesy before the Games", Zhang said. "Everyone knows how to walk, stand and sit," she said. "But we teach them how to do it in a good way." That means things like sitting, back straight, on the "front one-third" of a chair, she said, "Women sit with their knees and feet together. Men may sit with their feet slightly apart. If you cross your legs, you keep the toe of your lifted foot pointing downward." "Every day we teach the students about Confucius and Laozi. Every country has a basis for its culture." she said. "Confucius and Laozi are our country's basis."
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| 1. Besides (除了) Zhang Huiguang's way to change people's bad behavior, how many other ways have been mentioned in the passage? | |
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| A. Two B. Three C. Four D. Five | |
| 2. What has Zhang Huiguang's office done to teach people good behavior? | |
[ ] |
| A. They have given spitters 50 yuan's fine. B. They have provided a cultural and historical legacy to the world. C. They have sent volunteers to the streets to give people spit bags. D. They have worked with the media to teach people the right way to spit. |
| 3. Which picture shows the right way to sit? |
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| 4. This passage mainly tells us ________. |
[ ] |
| A. from spitting to sitting, Beijing goes all out to look good for Olympics B. spitting has really become a serious problem in our country C. foreigners have criticized (批评) us for our bad behavior D. Confucius and Laozi are the basis of Chinese culture |