什么是商业银行的表外业务？有哪些主要的种类？
下列属于运动技能的是（）。 ["体操技能","写字技能","作图技能","规则技能","操作仪器技能"]
在生产经营单位的安全生产工作中，最基本的安全管理制度是（）。 ["安全生产奖励制度","安全生产承包责任制","安全生产责任制"]
我国传媒行业第一家上市公司是（） ["湖南电广实业","上海东方明珠","成都博瑞投资","北京中视实业"]
In which service component of the optimize phase would you assess the routing and switching systemand recommend activities such as optimizing device configurations, capacity planning, or traffic analysis? （） ["ChangeManagement","SecurityAssessment","OperationsAssessment","SecurityAdministration","OperationsReadinessAssessment","TechnologyAssessment"]
盲签名除具有一般数字签名的特点外，还有两个特征：即（）和（）。
