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【单选题】
如下甲型肝炎有关叙述哪一项是正确的A.
甲型肝炎多反复发作
B.
有黄疸的肝炎都是甲肝
C.
甲肝无病毒携带者
D.
甲肝也可发生肝硬化
E.
甲肝皆有黄疸
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【简答题】任何单位和个人，不得转借、涂改、损毁、买卖或伪造税务登记证件。（ ）
【单选题】听力原文：The Fourth of July is the Independence Day. It was on July 4, 1776. that the Declaration of independence was signed, proclaiming the independence from England of the thirteen original colonies wh...
A.
The 4th of July is coming at hand.
B.
Independence Day was the day on which Pearl Harbor was bombed.
C.
The 4th of July marks America's freedom from England.
D.
July 4th is President Washington's birthday.
【单选题】The Americans declared their independence in ______ on July 4th, 1776.
A.
Washington D.C.
B.
New York
C.
Philadelphia
D.
Boston
【单选题】-Was the United State of America founded on July 4 th , 1776？ --You _________ be right but I need to check it in the history textbook anyway.
A.
have to
B.
must
C.
may
D.
will
【判断题】Since the date when independence from England was on July 4th, 1776, July 4th is the National Day in the United States of America. _______________
A.
正确
B.
错误
【单选题】下列关于RPR技术特点的描述中，错误的是（）。
A.
环中每一个结点都执行SRP公平算法，使得结点之间能够获得平等的带宽，防止个别结点因流量太大而造成环拥塞
B.
基于环型拓扑结构，当源结点向目的结点成功地发送一个数据帧之后，该数据帧由源结点从环中收回
C.
能够在50ms的时间内，隔离出现故障的结点和光纤段，提供快速保护和恢复功能
D.
支持加权公平法则和入口、出口峰值速率限制，用以保证根据用户带宽提供相应的服务
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