隔离是操作系统安全保障的措施之一。下列哪一项不属于安全隔离措施
A.物理隔离
B.时间隔离
C.分层隔离
D.密码隔离
参考答案:C
解析:分层隔离是为了降低系统的复杂性。
Don't eat _____meat, or you'll be _____ fat.
A.too much; much too
B.much too; much too
C.too much; too much
D.much too; too much
支气管哮喘发作时禁用的药物用是()
A.糖皮质激素
B.β受体激动剂
C.抗生素
D.肾上腺素
E.吗啡