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北京市地方标准DB11/419-2007《电梯安装维修作业安全规范》中规定，明火作业结束后，防火员应确认无明火和活在隐患后，方可离开。()

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Directions: This part consists of a short passage. In this passage, there are altogether 10mistakes, one in each numbered line. You may have to change a word, add a word or delete a word. Mark out the mistakes and put the corrections in the blanks provided. If you change a word, cross it out and write the correct word in the corresponding blank. If you add a word, put aninsertion mark (^) in the right place and write the missing word in the blank. If you delete a word, Cross it out and put a slash (/) in the blank.
Example:Television is rapidly becoming the literature of our periods (1). time/times/period
Many of the arguments having used for the study of literature (2). /
as a school subject are valid for^ study of television. (3).the __
latest figures from the United States Immigration and Naturalization Service show that well over one million immigrants are now arriving in America every year. This is highest number of 1. _
newcomers to the United States since the mass migration of Europeans in 2. _
the turn of the century. The new immigrants no longer come main from 3. _
Europe. According to the official government estimate, the greatest source of immigrants to America is now Asia, followed by Latin America. Forty-two percents of the new immigrants come from Asia 4. _
while 39 percent come from Latin America. Only 13 percent of the recent immigration to America is now from Europe. Although the United States now accepts twice as many foreigners as all other nations combined, but Congress is. studying several proposals to limit 5. _
immigration, include a new ceiling of about 450,000 immigrants a year. 6. _
It is little clear that Congress will do about the problem of illegal 7. _
immigrants. As estimated 500,000 to one million persons enter the United States illegally every year. Several congressmen have introduced legislation that would make it legal for employers to knowingly hire an 8. _
illegal alien. A company would face a heavy fine if convicted of hiring a person with proper papers. Many business groups and civil rights leaders 9. _
oppose this proposal because they fear it would lead. to wholesale discrimination in Hispanics and other recent immigrants. 10. _____

北京市地方标准DB11/419-2007《电梯安装维修作业安全规范》中规定，严禁在井道内上下抛掷工具、零件、材料等物品。()

北京市地方标准DB11/419-2007《电梯安装维修作业安全规范》中规定，井道中施工在采取安全措施后，可以上下交叉作业。()

北京市地方标准DB11/419-2007《电梯安装维修作业安全规范》规定，所有施工安全标志、须知、注意事项及操作说明应保持清晰，并设置在明显位置。()