1932年到1972年间，美国研究者随访了400名贫穷的身患梅毒的非裔美国黑人，以了解梅毒的发展过程。虽然当时青霉素已经普遍使用，而且价格并不昂贵，但是研究人并不对其采用青霉素治疗，而是给予安慰剂，以观察在不用药物的情况下梅毒会如何发展。医学伦理的角度，下列分析合理的是（）。

[单选题]You are the network administrator for your company. The network consists of a single Active Directory domain. All network servers run Windows Server 2003, and all client computers run Windows XP Professional. Your company's main office is located in Dublin, which is also the location of all domain controllers. The Dublin office contains 200 client computers. A branch office is located in Helsinki. This office contains 60 client computers. All user accounts for permanent employees in Helsinki are contained in an organizational unit (OU) named HelUsers. All user accounts for temporary employees in Helsinki are contained in an OU named TempUsers. A temporary employee named Peter is hired in the Helsinki office. The business hours in his office are 9:00 A.M. to 5:00 P.M. At 9:05 A.M. on his first Monday at work, Peter tries to log on to the domain from his client computer. However, he receives the message shown in the exhibit. (Click the Exhibit button.) You need to ensure that Peter can log on to the domain. What should you do? （）

[判断题]企鹅不会飞，所以它不是鸟。

[判断题]自然神论是理性主义，是启蒙运动的一个最初的源头。在17世纪的英国，自然神论本身也表现出了一种妥协的精神。

[单选题]胎儿脊柱的正常声像图表现为： ①纵切面呈一条排列整齐的光带； ②纵切面呈串珠状的小光团排列成两条弓状平行光带； ③纵切面呈一连串念珠状的小光团； ④横切面可见3个强回声团，呈"品"形

[单选题]当企业需要确定薪酬水平的岗位难以在类似企业中长找到对等岗位时，应考虑选择（　）

[单选题]心脏每分钟约射血（）

[单选题]对巴洛克建筑的褒贬差别之大，胜过任何其他种建筑潮流，请问下列形容词中哪一个适合描述这一潮流（　）。Ⅰ.新奇的;Ⅱ.合理的;Ⅲ.典雅的;Ⅳ.动态的

[单选题]第二代支付业务严格遵循（）的原则。

[判断题]电极反应Fe3+（aq）+e====Fe2+（aq）的ϕθ=+0.771V，则电极反应Fe2+（aq）==== Fe3+（aq）+e的ϕθ=－0.771V。

[单选题]下列哪种物品禁用高压蒸汽灭菌（）