问题
填空题
单向阀只允许液体（）。
答案
参考答案：单向流动
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单向阀只允许液体（）。
参考答案：单向流动
Tokyo, March 11, 2011
More than a minute before the earth under their feet began to shake, many millions of Japanese people got cell phone alerts; TV networks interrupted (打断,中断) their broadcasts and turned to the latest announcement of Japanese government; loud speakers started suddenly to warn people of the coming tsunami; bullet trains came to a stop. The earthquake on March 11 was the first test of the nation’s earthquake early-warning technology (地震预警技术). However, in the fight of Man vs Nature, Nature won again. Hundreds, if not thousands of people, lost their lives in Japan. Scientists believe it is the fifth-strongest quake in the world since 1900 and the most powerful on record ever to hit Japan. Lin tells of calm survivors When the office began to shake, his friends were calm and still working. But the shaking became stronger. People shouted at him: “Run out of the building, now!” This was Lin Jia’s first experience of an earthquake. Lin, 26, has been in Japan for three months, working as a software engineer in Shinagawa, Tokyo. Lin stayed with others in a bus station all afternoon. Buildings were shaken by a series(系列) of aftershocks. He was nervous, but the people around him were so calm and organized that he gradually (逐渐) calmed down. 小题1:What does the underlined word “alert” mean?
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