下列因素中哪些与数据库系统的运行效率有关　　Ⅰ功能是否齐全　　 Ⅱ．容错纠错能力

(66) is used to ensure the confidentiality, integrity and authenticity of the two end points in the private network. (67) , an application-layer protocol, authenticates each peer in an IPsec transaction. IKE negotiates security policy, determining which algorithm may be used to set up the tunnel. It also handles the exchange of session keys used for that one transaction.
Networks that use (68) to secure data traffic can automatically authenticate devices by using (69) , which verify the identities of the two users who are sending information back and forth. IPsec can be ideal way to secure data in large networks that require secure connections among many devices.
Users deploying IPsec can (70) their network infrastructure without affecting the applications on individual computer. The protocol suite is available as a software-only upgrade to the network infrastructure. This alows security to be implemented without costly changes to each computer. Most important, IPsec allows interoperability among different network devices, PCs and other computing systems.

A．characteristics

B．associated links

C．digital certificates

D．attributes

下列词语有四个错别字找出来并改正。

心旷神怡　兴哀荣辱　趾高气扬　花团锦簇　间而言之　小心翼翼

窥谷忘反　风格细拟　如释重负　一筹莫展　彬彬有礼　钟铭鼎食

________　________　________　________

干熄焦运行中通常在什么情况下充氮气，它与年修降温时充氮气，其作用有什么区别？

丁某(14岁)与同村的刘某(19岁)二人各拿出2000元钱，在当地开了一个小商行，未在工商行政管理部门注册登记为合伙企业，也未起字号，主要从事商品零售业务。商行开设后，生意红火，两人的收入不仅能满足自己所需，还能贴补家用。半年后，商行与某食品厂因购销合同发生纠纷。如果食品厂向法院起沂，应当以谁为被告：

A．以商行为被告

B．以丁某和刘某为共同被告

C．只能以刘某为被告

D．以丁某的监护人和刘某为被告

首选用于治疗急性乳腺炎郁乳期的方剂是

A．托里消毒散

B．普济消毒饮

C．瓜蒌牛蒡汤

D．柴胡清肝汤

E．五味消毒饮