甲方案的标准离差是1.42,乙方案的标准离差是1.06,如甲乙两方案的期望值相同,则甲方案的风险()乙方案的风险
A.大于
B.小于
C.等于
D.无法确定
参考答案:A
在汶川地震后,社会工作者鼓励和组织当地村民利用废墟上的砖瓦、木板、油毡自己搭建临时住房,不等不靠,自助自救。组织当地具有刺绣手艺的少数民族妇女组成刺绣小组,互相支持,走出失去家人孩子之痛。这里社会工作者是在()。
A.运用优势视角来分析服务对象
B.帮助服务对象增能
C.开展危机干预
D.积极参与社区重建
Originally introduced by Netscape Communications, (1) are a general mechanism which HTTP Server side applications, such as CGI (2) , can use to both store and retrieve information on the HTTP (2) side of the connection. Basically, Cookies can be used to compensate for the (4) nature of HTTP. The addition of a simple, persistent, client-side state significantly extends the capabilities of WWW-based (5) .
4()
A.Browsers
B.Cookies
C.Connections
D.Scripts