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【判断题】
NB-IOT的特点是高功耗、低成本、广覆盖。A.
正确
B.
错误
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举一反三
【简答题】Look at the four squares that indicate where the following sentence could be added to the passage. Nor is development being restricted to the Andes. Where would the sentence best fit?
【单选题】下面哪一个公式用于计算感染率（）
A.
（某一时期内新病例数／同期平均人数）×100%
B.
（受检者中阳性人数／同期暴露人数）×100%
C.
（受检者中阳性人数／同期平均人数）×100%
D.
（受检者中阴性人数／受检者人数）×100%
E.
（受检者中阳性人数／受检人数）×100%
【单选题】Three of the following are characteristics of London, Which of the four is the EXCEPTION?
A.
London is a political, economic and cultural centre of the country
B.
London has a larger population than all other cities in England
C.
London is not only the largest city in Britain,but also the largest in the world
D.
London has played a significant role in the economic construction of the country
【单选题】If p and q are statements, which of the following formulas is tautological? ( )
A.
┐ (p→q)∧q
B.
(p∨q)→p∧q
C.
(q∧(p→q))→p
D.
((p→q)∧p)→q
【单选题】下面哪一个公式用于计算感染率A
A.
(受检者中阳性人数/同期暴露人数)×100 %
B.
(受检者中阳性人数/受检人数)×100 %
C.
(受检者中阳性人数/同期平均人口数)×100%
D.
(某一时期内新病例数/同期平均人口数)×100 %
【单选题】According to the passage, which of the following four groups of garbage is ready for burning?
A.
food scraps and metals
B.
paper and glass
C.
metals and glass
D.
food scraps and paper
【单选题】下面哪一个公式用于计算感染率:
A.
（受检者中阳性人数／受检人数）X100％
B.
（受检者中阳性人数／同期暴露人数）x 100％
C.
（受检者中阳性人数／同期平均人数）X 100％
D.
（受检者中阴性人数／受检者人数）X100％
E.
（某一时期内新病历数／同期平均人数）x 100％
【简答题】Which of the following is TRUE about the four—day schedule?
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