更多“下图是人体特异性免疫的过程示意图(序号表示过程，字母表示细胞”相关的问题
如图所示，在成人，颈过伸时，前端可向咽喉方向移动平均（）https://assets.asklib.com/psource/2015111215170538159.jpg
A . 2cm
B . 1.0cm
C . 1.6cm
D . 1.9cm
E . 2.5cm
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下列特征中不是面向对象方法的主要特征的是()A.多态性B.标识唯一性C.封装性D.耦合性
下列特征中不是面向对象方法的主要特征的是() A.多态性 B.标识唯一性 C.封装性 D.耦合性
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下列有关呼吸困难的叙述，正确的是（）
A.支气管哮喘通常表现为呼气性呼吸困难 B.慢性阻塞性肺病（COPD.通常是吸气困难 C.喉头水肿常出现呼气相喘鸣 D.ARDS患者的呼吸窘迫，面罩给氧即可缓解 E.肺栓塞患者呼吸困难通常伴有低氧和二氧化碳潴留
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One of the most famous bridges in the world is the Golden Gate Bridge that spans San Francisco Bay. Because it was built in 1937, it has become one of the first sights people see if they are coming to San Francisco by ship. The main part of the Golden Gate Bridge is a suspension span. It hangs from steel cables that are supported by two huge towers, one at each end of the bridge. The suspension span was the longest in the world when it was finished in 1937. It measures 4 200 feet between the towers. The Boor of the bridge is wide enough for six lanes of cars, three in each direction. There are sidewalks, too, but not many people use them. It costs a lot of time to go on foot from one end of the bridge to the other. The years since 1950 have been called the era of the giant bridges. Most of them have been built in the United States. The Mackinac Bridge in upper Michigan was finished in 1958. It is a suspension bridge, with foundations resting on rocks 200 feet below the surface of the water. With a span of 3 800 feet, it was the second in length to the Golden Gate Bridge. In 1964 the longest and heaviest suspension bridge was completed in New York City. Known as the Verrazano--Narrows Bridge, it carries traffic between Staten Island and Brooklyn, parts of the city of New York. Before it was built, commuters to the city had to travel by ferry. Now millions of cars pass over the bridge every year. When a lower deck is added, 48 million cars will be able to cross the bridge in a single year.
One of the most famous bridges in the world is the Golden Gate Bridge that spans San Francisco Bay. Because it was built in 1937, it has become one of the first sights people see if they are coming to San Francisco by ship. The main part of the Golden Gate Bridge is a suspension span. It hangs from steel cables that are supported by two huge towers, one at each end of the bridge. The suspension span was the longest in the world when it was finished in 1937. It measures 4 200 feet between the towers. The Boor of the bridge is wide enough for six lanes of cars, three in each direction. There are sidewalks, too, but not many people use them. It costs a lot of time to go on foot from one end of the bridge to the other.
The years since 1950 have been called the era of the giant bridges. Most of them have been built in the United States. The Mackinac Bridge in upper Michigan was finished in 1958. It is a suspension bridge, with foundations resting on rocks 200 feet below the surface of the water. With a span of 3 800 feet, it was the second in length to the Golden Gate Bridge.
In 1964 the longest and heaviest suspension bridge was completed in New York City. Known as the Verrazano--Narrows Bridge, it carries traffic between Staten Island and Brooklyn, parts of the city of New York. Before it was built, commuters to the city had to travel by ferry. Now millions of cars pass over the bridge every year. When a lower deck is added, 48 million cars will be able to cross the bridge in a single year.
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教学中学生要掌握直接经验和间接经验，重点掌握（ ）。
A．直接经验
B．间接经验
C．直接经验与间接经验并重
D．先掌握直接经验，后掌握间接经验
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在传统系统的基础上，分散自律调度集中系统在软件上主要是新增了自律机。
A . 正确
B . 错误
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管理会计作为一个相对独立而比较完整的理论、方法体系,是随着科学技术的进步和社会经济的发展而逐步形成和发展起来的。先后经历了两个发展阶段。
A. 传统管理会计 B. 现代管理会计
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由于能够使预算期间与会计期间相对应，定期预算有利于企业长远打算，有利于企业长期稳定发展。 ( )
A.对 B.错
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下列列各项中，符合消费税纳税义务发生时间规定的是( )。 A．进口的应税消费品，为取得进口货物的当天 B．自产自用的应税消费品，为移送使用的当天 C．委托加工的应税消费品，为支付加工费的当天 D．采取预收货款结算方式的，为收到预收款的当天
A.进口的应税消费品，为取得进口货物的当天B.自产自用的应税消费品，为移送使用的当天C.委托加工的应税消费品，为支付加工费的当天
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当换向器偏心时，电刷与换向器的（），引起换向不良。
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根据《现金管理暂行条例》，（）不需开户银行审核可以使用现金。
A.2000元个人稿费
B.1500元零星支出
C.1100元个人工资
D.900元个人体育奖金
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读程序,以下描述哪一个正确? class Base {}class Sub extends Base {} class Sub2 extends Base {} public class Test { public static void main(String args[]) { Base b = new Base(); Sub s = (Sub) b; }}
A. 编译出错 B. 编译通过，运行时出错 C. 编译出错，但可以继续运行 D. 程序正常编译和运行
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列宁说判断历史的功绩，不是根据历史活动家没有提供现代所要求的东西，而是根据他们比他们的前辈提供了新的东西。”我国社会主义改造的基本完成，是一个伟大的历史性胜利。下列关于我国社会主义改造的历史经验的说法中，正确的是（）。
A.坚持社会主义工业化建设与社会主义改造同时并举 B.采取积极引导、逐步过渡的方式 C.保护农民对土地、耕畜的深厚的私有观念 D.用和平方法进行改造
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树立职业理想，应考虑的主要因素包括（）。
A . A.个人的内在条件
B . B.体面的工作环境
C . C.社会发展的需要
D . D.丰厚的工资收入
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当系统压力为零时，外界负载等于（）。
A.0
B.无穷大
C.无穷小
D.整数
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