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A. 下列使用计算机不安全的行为是（ C ） B. 定时查杀病毒和木马 C. 不安装漏洞的补丁 D. 到官方网站下载软件
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】关于咽肌的描述哪项是错误的
A.
咽缩肌共同收缩可使咽腔缩小
B.
咽提肌收缩可使咽喉上举.咽部松驰.开放梨状窝
C.
环杓肌收缩可使咽腔扩大
D.
腭帆肌的作用主要是控制鼻咽峡启闭和咽鼓管咽口开放
E.
咽提肌收缩可使喉口封闭
【单选题】患者，女，59岁。跌倒致右股骨颈骨折，现给予持续骨牵引处理，该病人最易发生的并发症是
A.
休克
B.
右坐骨神经损伤
C.
髋关节创伤性关节炎
D.
右股骨头缺血性坏死
E.
骨化性肌炎
【简答题】The UK could spend two years or more negotiating the terms of its divorce from the 28-member economic and political bloc. In that time, the country will have to work through many difficult questions a...
【单选题】The point of the debate over family structure lies in ______.
A.
whether we should believe in equality and diversity
B.
how parents should pursue their individual happiness
C.
why we should meet the needs of children for a happy family
D.
how the breakup of the families threatens the well being of children
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