更多“遗传性α1-抗胰蛋白酶缺乏与下列哪种肺”相关的问题
投资者购买了一份执行价格为10元的看跌期权，支付期权费3元，当标的资产的市场价格为8元时，该看跌期权处于( )；若投资者立即执行该合约，则其所获利润为( )。
A．虚值状态，-1元
B．实值状态，-1元
C．实值状态，2元
D．虚值状态，2元
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在Windows操作系统中，下列关于文档窗口的描述，正确的是( )。A.只能打开一个文档窗口B.可以同时打
在Windows操作系统中，下列关于文档窗口的描述，正确的是( )。 A.只能打开一个文档窗口 B.可以同时打开多个文档窗口，但其中只有一个是活动窗口 C.可以同时打开多个文档窗口，被打开的窗口都是活动窗口 D.可以同时打开多个文档窗口，但在屏幕上只能看见一个文档窗口
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部门内燃机车车轮直径为1050mm。（）
A . 正确
B . 错误
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供应链管理关心的并不仅仅是物料实体在供应链中的流动，供应链管理注重总的物流成本（从原材料到最终产成品的费用）与客户服务水平之间的关系，为此要把供应链各个职能部门有机地结合在一起。
A . 正确
B . 错误
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维生素E是抗氧化剂，能够清除体内的自由基。于是，保健品商家把维生素E作为提高免疫力、抗癌、抗衰老的灵丹妙药来宜传。科学家通过实验发现：如果食物中维生素E的含量为每毫升5微克，能显著延长果蝇的寿命，但是如果维生素E的含量增加到每毫升25微克，果蝇的寿命反而缩短了。其实，细胞中的自由基参与了许多重要的生命活动，比如细胞增殖、细胞间通讯、细胞凋亡、免疫反应等。 由此推论不正确的是( )。
A．自由基有其独特的作用，对机体而言不可或缺的B．科学家对果蝇的实验提示了“过犹不及”的道理C．维生素E的含量超过25微克时，会危及到人的生命D．维生素是维持人体生命的必要物质，但过量服用时也会威胁生命
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The economy of the United States after 1952 was the economy of a well-fed, almost fully employed ...The passage is mainly concerned with () of the United States history
A．The agricultural trends of the 1950’s.
B．The unemployment rate in 1955.
C．The general economic situation in the 1950’s.
D．The federal budget of 1952.
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教师的成长阶段包括（ ） A．关注生存阶段 B．关注自我阶段 C．关注学生阶段 D．关注情境阶段 E．关注发展阶段
A.关注生存阶段B.关注自我阶段C.关注学生阶段D.关注情境阶段E.关注发展阶段
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有一厚度为300mm的砖墙，其初始温度均匀为293K。由于环境温度的变化，使得砖墙两侧表面的温度每隔2500s上升10K，试计算1×10 4s后砖墙内各处温度的变化值。 已知砖的平均导温系数a=5.0×10 -7m 2/s。
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以下属于幼儿园科学教育数学方面的内容的是（）。
A.认识常见的物品和材料B.探索发现活动C.认识时间D.认识常见的科学现象
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十二经脉中与舌联系密切的有()
A . A．肺经
B . B．大肠经
C . C．心经
D . D．肾经
E . E．膀胱经
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φ30的孔,上偏差为_____μm,下偏差+12μm,公差为22μm。
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Surfing (浏览) the Internet can be as addictive (上瘾的) as drugs, alcohol or gambling, a researcher from University of Pittsburgh said last month. In a study of almost 400 men and women in Canada, researchers found Internet addiction caused people to spend 40 hours or more a week online. Most of them often got involved in role-playing games or chat room discussion. One 17-year-old boy was so addicted to the Internet activities that his parents had to admit him to a hospital for 10 days’ treatment. One woman was described by friends and family as a perfect wife and mother. She became so addicted to the Internet that she would not cook or clean and was neglecting her children and husband, because she was spending as much as 12 hours a day talking to people on the Internet. Finally her husband said, "Choose me or the computer. " She divorced him. Kimberly Young, an assistant professor of psychology at the University of Pittsburgh, found that 76 percent of the subjects(调查对象) in the study spend an average of 40 hours a week on the Internet. Of 396 people who met Young’ s criteria(标准) for addicted Internet users, 157 were men, 239 women. The men were younger with an average age of 29, the women average 43 years of age. The largest group of addicted users of the Internet was people who were not working outside home, housewives, students and those who were disabled(残疾) or retired.
A．supportiveB．negativeC．neutralD．practical
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夜间通过无交通信号灯控制的交叉路口时，不得变换远、近光灯。
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Hong Kong returned to China in 1997.
A． Right.
B． Wrong.
C． Doesn't ay.
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