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目前国内建议临床实验室测定ApoAⅠ和ApoB的常规方法是（）
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机内电源除提供主板所需的直流电源外，还要给机内的（）提供直流5V电源
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TJWX-2000型信号微机监测系统中（）是采集机的核心，对模拟量与开关量进行综合处理，并通过CAN总线与站机通信。
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Kerberos可以防止以下哪种攻击？（）
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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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用抗甲状腺药物治疗毒性弥漫性甲状腺肿患者时，下述哪项是正确的（）
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电力系统有功功率备用容量确定的原则是（）。
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人的心理反映的最高级的形式是（）。
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在窗户保温设计中，对居住建筑各方向窗墙面积比的要求为热工规范考虑：北向（）；东西向（）；南向≤（）节能上考虑：北向≤（）；东西向≤（）；南向≤（）。