下列有关DNA分子复制的叙述，错误的是[ ]

A．DNA复制过程中首先需要解旋酶破坏DNA双链之间的氢键，使两链解开

B．DNA分子复制所生成的两条子链碱基互补且方向相同

C．DNA分子具有多起点复制的特点，缩短了复制所需的时间

D．DNA分子需要DNA聚合酶将单个脱氧核苷酸连接成DNA片段

NAC’s (Network Access Control)role is to restrict network access to only compliant endpoints and (1) users. However, NAC is not a complete LAN (2) solution; additional proactive and (3) security measures must be implemented. Nevis is the first and only comprehensive LAN security solution that combines deep security processing of every packet at 100Gbps, ensuring a high level of security plus application availability and performance. Nevis integrates NAC as the first line of LAN security (4) In addition to NAC, enterprises need to implement role--based network access control as well as critical proactive security measures-real-time, multilevel (5) inspection and microsecond threat containment.

(5)

A．port

B．connection

C．threat

D．insurance