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【多选题】
开展历史性队列研究所需要具备的特殊条件包括（）。A.
应有足够数量的完整可靠的过去某段时间内研究对象的暴露资料
B.
应有明确的检验假设
C.
所研究疾病的发生率或死亡率应较高
D.
应明确规定结局变量
E.
应有完整可靠的过去某段时间内研究对象的结局资料
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举一反三
【单选题】What is NOT the benefit the piglets get from sleeping on the waterbeds than otherwise?
A.
They can get much more weight.
B.
They can avoid suffering many potential injuries.
C.
They can avoid the risk of possible early death.
D.
They can eat much more than otherwise.
【单选题】关于算法下列叙述错误的是()。
A.
算法就是描述解决问题的一系列的步骤和方法
B.
解决同一问题的算法可能有多个
C.
用自然语言表达算法可能产生二义性
D.
用流程图表达算法不够直观
【简答题】With the fierce competition at work or in school, you are often stressed out and easily 1 . How can you relieve such stress? Follow the following tips to reduce your stress to manageable levels! Avoid...
【简答题】• 1 ) Avoid settling disputes with 2 ) violence . If you’re in a difficult situation or someone’s 3 ) threatening you,seek 4 ) help immediately from yourcoach or from an official. Remember, too, that ...
【单选题】关于算法下列叙述错误的是（）。
A.
用自然语言表达算法可能产生二义性
B.
用流程图表达算法不直观
C.
解决同一问题的算法可能有多个
D.
算法就是描述解决问题的一系列的步骤和方法
【简答题】Reading sheet 1. Here is a summary of the benefits of honesty in the workplace. Choose the appropriate answer to fill in the blanks. You can add more examples to justify. A. Sleep sweetly B. Avoid ...
【单选题】What is the message that the author wants us to get from the text?
A.
Academic publishing should not be so money-oriented.
B.
University presses must more realistically publish according to its market.
C.
Publishers need more support from the government to avoid becoming too commercial.
D.
University presses must publish based on the public interest.
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