女性,22岁,多年来休息不好时经常出现发作性眼前闪光感,几分钟后消失,而后双侧额颞部出现搏动性头痛,伴恶心、呕吐,持续数小时缓解,神经系统检查完全正常()
A. 普通型偏头痛
B. 典型偏头痛
C. 丛集性头痛
D. 紧张性头痛
E. 痛性眼肌麻痹
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You have a single Active Directory domain. AlI domain controllers run Windows Server 2008 and are configured as DNS servers. The domain contains one Active Directory-integrated DNS zone. You need to ensure that outdated DNS records are automatically removed from the DNS zone. What should you do()
A. From the properties of the zone, enable scavenging.
B. From the properties of the zone, disable dynamic updates.
C. From the properties of the zone, modify the TTL of the SOA record.
D. From the command prompt, run ipconfig /flushdns.
一幅彩色静态图像(RGB),设分辨率为256×512,每一种颜色用8bit表示,则该彩色静态图像的数据量为。()
A. 512×512×3×8bit
B. 256×512×3×8bit
C. 256×256×3×8bit
D. 512×512×3×8×25bit