符合一年一次探亲条件的铁路职工,如经过领导批准可将探亲假一年分两次使用并填写两次探亲乘车证。()
事故救援与抢险救灾,可凭调度命令乘车,()乘车有效。 单程。 往返。 两次。 一次。
Cisco NX-OS Software supports SNMPv1, SNMPv2c, and SNMPv3. Both SNMPv1 and SNMPv2c use a community-based form of security. SNMPv3 provides secure access to devices by a combination of authenticating and encrypting frames over the network. Which security features are provided in Cisco NX-OS SNMPv3? () encryption—scrambles the packet contents to prevent them from being seen by unauthorized sources。 password—a password (community string) sent in clear text between a manager and agent for added protection。 authentication—determines that the message is from a valid source。 message integrity—ensures that a packet has not been tampered with while it was in transit 。 user—to determine if user authentication is used instead of community string。
阿里斯托芬的代表作《阿卡奈人》,反映的社会问题是()。 妇女问题。 贫富问题。 战争与和平。 教育问题。
班级的教育性特点主要表现在对学生社会化方面。
酸牛乳生产中最常用的菌种是保加利亚乳杆菌和()