引起高镁血症最重要的原因是()。
A.口服镁盐过多
B.糖尿病酮症酸中毒昏迷患者未经治疗
C.严重烧伤
D.肾脏排镁减少
E.长期禁食
参考答案:D
. Jim’s leg was ______ damaged in the accident. He now walks with a limp.
A.permanently
B.increasingly
C.virtually
D.deadly
DNS服务器面临的安全隐患主要包括()
A.DNS欺骗(DNSSpoffing)
B.拒绝服务(DenialofservicE.攻击
C.缓冲区漏洞溢出攻击(BufferOverflow)
D.缓存投毒(Cachepoisoning)