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危险化学品安全技术 扑灭遇湿易燃物品火灾，可以用( )灭火剂扑救。
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How did they get thereFour men were sitting in a bar in London, having a drink. They were talking about dogs."If you want to buy a nice dog," said the first man. "One of my greyhounds is racing in Manchester this evening. Why don’t you come and watch the race If you like the dog, you can buy it. ""I’ 11 buy it if it wins the race," said the second man."And I’ 11 buy it if it loses the race," said the third man."My family won’ t let me get a dog, but I’ d like to come and see the race," said the fourth man.They all went to Manchester to see the race, but they went there in different ways, the first man by car, the second man by plane, the third man by train and the fourth by bus.To cut a long story short, the dog won the race; the second man bought the dog from the first man, and they went to a restaurant to celebrate.While eating, they discussed the different ways of getting to Manchester, and wrote the information on the tablecloth, like this:Length of JourneyCost of journeyFirst man (by car)3hrs 30mins￡ 8.00Second man (by plane)45mins￡ 22.00Third man (by train)2hrs 30rains￡ 14.80Fourth man (by bus)4hrs 30nfins￡ 6.00Charlie said, "Well, that’s interesting. My journey was quicker than Albert’s or Dave’ s. ""That’ s right," said Albert, "but mine cost less than yours, Charlie, and less than Dave’ s. ""I don’t care how long a journey, takes," said Dave, "you’ll never see me in a plane. I’m terrified of flying."Bill didn’t say anything; he was wondering what his wife would say when he came home with a dog.The first man who went by car is (46) .The second man who went by plane is (47) .The third man who went by train is (48) .The fourth man who went (49) is (50) . 49（）
Java语言不允许使用________访问内存，更不允许使用_______访问内存。
The spaceship flew around the new planet several times. The planet was blue and green. They couldn’t see the surface of the planet because there were too many white clouds. The spaceship descended slowly through the clouds and landed in the middle of a green forest. The two astronauts put on their space suits, opened the door, climbed carefully down the ladder, and stepped onto the planet. The woman looked at a small control unit on her arm. "It’ s all right," she said to the man. "We can breathe the air... it’ s a mixture of oxygen and nitrogen. " Both of them took off their helmets and breathed deeply.They looked at everything carefully. All the plants and animals looked new and strange. They could not find any intelligent life. How do all the plants & animals look（）
矿山安全技术 能起到隔绝煤矿井下煤尘爆炸传播的技术措施是( )。
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