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题目：
判断题
绝大多数国际贸易的商品是包装货物。
答案：
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2-甲基丁烷和氯气发生取代反应时，能生成一氯代物异构体的数目是
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在组合逻辑电路的常用设计方法中，可以用（）来表示逻辑抽象的结果。
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投保人可在合同生效后按保单的（）的一定比例向保险公司申请贷款。
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关税的纳税义务人包括（）
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D触发器具有的功能有：
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The task of being accepted and enrolled(招收)in a university begins early for some students. Long【C1】______they graduate from high school. These students take special【C2】______to prepare for advanced study. They may also take one of more examinations that test how【C3】______prepared they are for the university. In the final year of high school, they【C4】______applications and send them, with their student records, to the universities which they hope to【C5】______. Some high school students may be【C6】______to have an interview with representatives of the university: Nearly【C7】______, and usually very frightened, they are【C8】______to show that they have a good attitude and the【C9】______to succeed. When the new students are finally【C10】______, there may be one more step they have to【C11】______before registering for classes and【C12】______to work. Many colleges and universities【C13】______an orientation(情况介绍)program for new students.【C14】______these programs, the young people get to know the【C15】______for registration and student advising, university rules, the【C16】______of the library all the other【C17】______services of the college or university. Beginning a new life in a new place can be very【C18】______. The more knowledge students have【C19】______the school, the easier it will be for them to【C20】______to the new environment. However, it takes time to get used to college life.【C1】A．asB．afterC．sinceD．before
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通常企业并不试图去改变消费者对其产品、服务的态度，而是使自己的产品、服务和营销策略符合消费者既有态度。
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通常情况下，旅游者对火车的知觉主要与（）因素有关。
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表达序列标签（EST）
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沸腾料层的高度和料层中固体颗粒占多少体积份额，对沸腾断中受热面的传热没有关系。