熔化焊是利用整体加热的方法将连接处的金属加热至熔化状态而完成的焊接方法。()
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The expression "a black eye" (Para. 3) most probably means _____.
A. an unfriendly attitude
B. a pleasant attitude
C. a changing attitude
D. a doubtful attitude
安全生产工作必须强调预防为主，所以说：“预防为主”是落实“安全第一”的基础，离开了“预防为主”，“安全第一”也是一句空话。()
In the last paragraph, Galinsky suggests that _____.
A. a company should seek help from outsider to reverse the downfall
B. Ford out-performed General Motors in times of trouble
C. outsiders are better decision-makers than insiders to get a recovery
D. a company should use a true outsider to avoid sunk costs
任何生产安全事故的责任人都必须受到相应的责任追究。()
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