在struts2配置中用（）元素来配置常量。 A: 〈const〉 B: 〈constants〉 C: 〈constant〉 D: 〈constant-mapping〉

Mind mapping

当我们编写好Filter或Servlet时在配置其mapping时，下面正确的是（多选）： A: 只能通过“url-pattern”来定义mapping B: 可通过“url-pattern”来定义mapping C: 只能通过“servlet-name”来定义mapping D: 可通过“servlet-name”来定义mapping

【单选题】VLAN mapping可以实现不同VLAN间通信,下面关于VLAN mapping说法不正确的是: A. VLAN mapping也叫VLAN translation，发生在报文从入端口进来之后，从出端口转发出去之前 B. VLAN mapping可以实现用户VLAN ID和运营商VLAN ID的相互转换 C. VLAN mapping可以通过配置来实现 D. VLAN mapping就是增加一层VLAN Tag

constant

when a transistor is in the forward-active mode, the collector current is constant with a constant base current

The main philosophical teaching of Confucianism was reflected in the five constant virtues. The core of the five constant virtues is ___.

What is stored in the ARP table of the Internet host? ( ) A: IP addresses B: MAC addressses C: the mapping of domain names to IP addressses D: the mapping of IP addresses to MAC addressses

英译汉：a constant body temperature

The Arps’ decline equation is based on important and widely violated assumptions including constant BHP,unchanging drainage area, ________. A: constant conpressibility B: unchanging flow type C: constant k and s D: boundary dominated flow