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什么是双区段轨道电路？有什么作用？
全球契约要以全球公共利益为目标，全球契约的基本设想包括（）。
下列不是CREST综合征的症状的是（）
The Great Depression spread from the US to the rest of the capitalist world, yet it affected the Americans the most. It gave (1)____ to the fear that such catastrophes would (2)____(occur) or even that the American economy would live in a (3) s____ of permanent depression unless radical changes were (4) m____ in the economic system. The fear is now gone, partly because that analysis was judged faulty. Changes in institutions and policies that (5) sta____ the economy also helped to dispel those fears. People's worry (6) per____ about the possibility of less severe, but still debilitating (使虚弱), recessions, (7)____ . But the experience of the postwar years has provided two lessons: First, the only serious recessions in which US unemployment rose to highs of 9 percent and 11 percent (8) re____, came after fairly high inflation. Second, even recessions of that depth later on (9) t____ out to be less painful than had been expected because they were short. This was because the (10) ____ American worker had substantial assets, and was likely to be in a family with more than one worker.
苯丙酮尿症的饮食疗法，错误的是（）
协管员、信息员有下列情形（）之一的，应解除其聘任资格。
填土压实是保证（）填筑质量的关键，务必充分重视。
下列关于固定资产减值准备的步骤表述错误的是（）。
不符合枕骨大孔疝表现的是（ ）。
GB/T3098.1-2010《紧固件机械性能螺栓、螺钉和螺柱》中规定，楔负载试验的主要目的是检验（）的强度。