每一个使用电子邮件服务的用户必须先（）。
它们与何种基岩相对应？
以下（）方法能够有效地检测输入条件的各种组合可能引起的错误。 ["等价类划分","边界值分析","错误推测","因果图"]
酶有哪些催化特性？
Refer to the exhibit. The DHCP configuration that is shown is configured on a Cisco router. Whichstatement is true？（） ["The router will distribute IP addresses from pool 1 until its addresses are exhausted. Then therouter will begin distributing addresses from pool 2","The configuration is invalid because the DHCP options are global configuration commands","The configuration is incomplete until the DHCP pools are bound to the appropriate interface orinterfaces","The router will choose which pool to use based upon the interface the DHCP request wasreceived o"]
如何测定导水机构的压紧行程？若压紧行程偏小，应如何调整？
