怀疑奶牛发生疯牛病,实验室确诊的方法是______
A. 检测血清抗体
B. 病原分离鉴定
C. 检测病原微生物
D. 脑组织病理学检查
E. 病料接种小鼠,观察症状
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根据以下信息,回答第80题至第81题。 一家公司购买了一项使用寿命十年的资产。公司出于纳税考虑将对其使用加速折旧法。在报表上将使用直线折旧法,因为这种方法据信可以更好地反映这项资产的实际使用情况。 卖方或者出租方以买方或租赁方允诺不与自己的竞争者合作为前提才肯交易,那么这种安排可以用______来描述。
A. a.搭售
B. b.排他性贸易安排
C. c.垄断
D. d.买家垄断
A few years ago, Facebook was forced to retreat from a new service called Beacon. It tracked what the social network"s users were doing elsewhere on the web—which caused a huge 1 because of the loss of personal privacy. 2 , Facebook promised to make 3 efforts to better protect people"s information.But 4 the firm has not been trying very hard. On November 29th America"s Federal Trade Commission (FTC) 5 the results of an investigation it had conducted of Facebook. They showed that the world"s biggest social network, which now 6 more than 800m users, has been making information public that it had 7 to keep private.The FTC"s findings come at a(n) 8 time for Facebook, which is preparing for an initial public offering (IPO) that is almost 9 to take place next year. Some recent reports have 10 that the firm may seek a listing as early as next spring, and that it will try to 11 a whopping $10 billion in an IPO that would 12 it at $100 billion. To 13 the way for an offering, Facebook 14 needs to resolve some of the regulatory tussles over privacy that it has become embroiled in. 15 the FTC"s announcement, which came as part of a settlement struck between the commission and Facebook. The FTC"s investigation 16 a litany of instances in which the social network had 17 its users. In what is perhaps the most damning of the findings, the agency documents that Facebook has been 18 people"s personal information with advertisers—a practice its senior executives have 19 sworn it does not indulge in. The FTC also says that the firm failed to make photos and videos on deactivated and deleted user accounts 20 after promising to do so.
A. lead
B. set
C. clear
D. cut
目前我国农业部确定实施强制免疫的动物疫病不包括______
A. 猪瘟
B. 口蹄疫
C. 猪肺疫
D. 高致病性禽流感
E. 高致病性猪蓝耳病
怀孕母猪感染猪细小病毒后,主要临诊症状是______
A. 腹泻
B. 繁殖障碍
C. 呼吸困难
D. 神经症状
E. 运动失调