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【多选题】
热原检查用的家兔应满足以下哪些条件( )A.
体重1.7kg以上
B.
预测体温前7天体重应不减轻
C.
预测体温均在37.0-38.6℃的范围内
D.
用于热原检查后的家兔，如供试品判定为符合规定，至少应休息两可供第2次检查用
E.
如供试品判定为不符合规定，则组内全部家兔不再使用
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【单选题】What is the most important way for people to use more fresh water according to the author?
A.
To take more water from the sea.
B.
To protect mountainous areas.
C.
To save more water in daily life.
D.
To protect the natural ecology balance.
【简答题】What is the most controversial use of CRISPR-Cas9?
【单选题】According to this article, what is the most important reason for the widespread use of English?
A.
it was popular during Shakespare's time
B.
it is used in former British colonies
C.
it serves the needs of its native speakers
D.
it is a world language that is used for international communication
【简答题】What is the most effective way to reduce tobacco use according to the WHO’s report? [A] Monitoring tobacco use and prion policies. [B] Protecting people by establishing smoke-free areas. [C] Enfo...
【简答题】()是高丽时期与宋朝相连的,最具代表性的、几乎是唯一的港口。
【单选题】What is the most effective way to use the eyes during night flight?
A.
Look only at far away, dim lights.
B.
Scan slowly to permit off-center viewing.
C.
Concentrate directly on each object for a few seconds.
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