题目内容

研究长期吸入氯乙烯气体对动物肝脏的危害。一组大白鼠每天放置于含有一定浓度氯乙烯气体的染毒柜中8小时,作为处理组;另一组则每天放置于含有正常空气的同样体积染毒柜中8小时。观察3个月后,将两组动物处死,观察其肝脏变化情况。这种对照组的设计属于

A. 实验组间互为对照
B. 实验和对照在同一受试对象身上进行的对照
C. 对照组不加任何处理的对照
D. 实验组施加处理因素,对照组伴随非处理因素的对照
E. 将实验效应与公认的标准值或正常值作对照

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The English way of commenting on something or somebody suggests that ________.[A] the English are modest in most circumstances [C] the English tend to display less emotion than they feel[B] the English feel no less than any other nationality [D] the English don’t take a strong interest in making comment

A. The English way of commenting on something or somebody suggests that ________.
B. the English are modest in most circumstances
C. the English feel no less than any other nationality
D. the English tend to display less emotion than they feel
E. the English don’t take a strong interest in making comment

处罚决定的执行是整个统计违法案件查处工作的最后一个环节。( )

A. 对
B. 错

The observations by Tsunemi Kubodera and Kyoichi Mori was reported in the journal Proceedings of Royal Society B.

基金管理费通常按照每个估值日基金净资产的一定比率(年率)逐日计提,累计至每月月底,按月支付。( )

A. 对
B. 错

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