下列病毒中不能引起持久性免疫的病毒是()。
A.麻疹病毒
B.腮腺炎病毒
C.流行性乙型脑炎病毒
D.流感病毒
E.脊髓灰质炎病毒
参考答案:D
Which of the following statement is INCORRECT()。
A. The British constitution includes the Magna Carta of 1215.
B. The British constitution includes Parliamentary acts.
C. The British constitution includes decisions made by courts of law.
D. The British constitution includes one single written constitution.
某消防安全重点单位根据有关规定制定了消防应急疏散预案,将疏散引导工作分为四大块,下列工作内容中不属于疏散引导工作内容的是()。
A.拨打119电话
B.根据火场情况划定安全区
C.明确疏散引导责任人
D.根据需要及时变更疏散路线