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【单选题】
下列关于暴发的描述错误的是
A.
暴发常由于许多人接触同一致病因子而引起
B.
局部地区或集体单位在较短时间内发生大量同一种疾病称为暴发
C.
一次同源性疾病暴发过程中,大部分病例的发生日期往往在该病的最短和最长潜伏期之间
D.
一次同源性暴发的流行高峰与中位数潜伏期基本一致
E.
疾病暴发时病例发生日期之不同,是由于该病的传染期不同所致
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参考答案:
举一反三
【单选题】做V-P试验用
A.
蛋白胨水
B.
葡萄糖蛋白胨水
C.
双糖铁
D.
半固体培养基
E.
营养琼脂平板
【简答题】As soon as you land at London Heathrow airport, you will see it is easy for you to ride the subway or take a bus to your hotel. However, if you are planning on touring London, it would be the best ide...
【单选题】It _________ you to at least 50% off the regular price of either frames or lenses when you buy both.
A.
presents
B.
entitles
C.
credits
D.
tips
【单选题】做V-P试验用
A.
蛋白胨水
B.
葡萄糖蛋白胨水
C.
双糖
D.
半固体培养基
E.
营养琼脂平板
【单选题】You don’t need to tell me about it.You can find other time to report it to me .
A.
at last
B.
in case
C.
in detail
D.
in time
【简答题】You send it to a friend at Christmas.
【简答题】Before listening to dialogue 5/2, complete the questions below using the verbs from the box. a) Can you until you get to the toilet? b) Does it ever before you reach the toilet? c) Does it some time t...
【单选题】The mother is told that her child is desperately ill——the chances of survival are slim, and the treatment is as dreadful as the disease.
A.
incurable
B.
fearful
C.
impossible
D.
troublesome
【单选题】If you don't want to go swimming,you ________ as well stay at home.Actually,it is up to you to decide.
A.
should
B.
would
C.
can
D.
may
【简答题】What is Home stay? Literally it is a home for you to stay at when you are not at home. To be specific, home stay provides foreign language students with the opportunity to speak native language outsid...
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