【单选题】A(n)______ allows users to scramble and unscramble their messages easily without a third partyintruding.
【单选题】E-mail is a(n) ______ message delivery system that allows information such as typed messages and multimedia to be sent to individual compmer users.
【简答题】根据饲料的来源,将犬猫的饲料分为 、 、 和 。
【单选题】Which one of the following protocols allows the information about the configuration of a new VLAN to be distributed across entire switched network?
【多选题】患儿,男性,8岁,因发热,头痛,皮疹3天入院。入院查:急性病容,皮疹出现于躯干、头面部、四肢近端。可见红斑疹、丘疹、疱疹、脓疱疹不同形态的皮疹,个别皮疹已结痂。血象:白细胞总数为4.2×10 9 /L。患儿同学中有类似的病人。为确诊可行的检查有()。
A.
用补体结合试验或ELISA法检测抗V和抗S两种抗体
F.
新鲜水疱底部刮取物用瑞氏染色找到多核巨细胞和核内包涵体
【单选题】A(n) _____ is a special type of valve which prevents the passage of steam but allows condensate to pass.
【简答题】The ___________ atmosphere of the inn allows guests to feel totally at home.