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【单选题】
Many researchers believe that the presence of RNA in brain cells is the biochemical basis of memory; that is, the presence of RNA enables us to remember. Because certain chemicals are known to inhibit the synthesis of RNA in the body, we can test this hypothesis. Animals that have learned particular responses can be injected with an RNA inhibitor and then tested for memory of the learned responses. Which of the following test results would most seriously weaken the case for RNA as the basis of memory?A.
After an injection of RNA inhibitor, a wide range of behaviors in addition to the learned responses were affected.
B.
After an injection of RNA inhibitor, animals that had not consistently been giving the learned responses were able to give them consistently.
C.
After injections of RNA inhibitor, some animals lost memory of the learned responses totally but others lost it only partially.
D.
After a small injection of RNA inhibitor, animals responded well, but as the size of the injection increased, they gave fewer of the learned responses.
E.
After an injection of RNA inhibitor, animals could not learn a new response.
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【多选题】根据我国目前有关法律法规的规定，如果公司股票申请上市，其持有股票面值达 1000元以上的股东不少于1000人，向社会公开发行的股份不少于公司发行股份总数的 25%。这种规定是为了保证 ( )
A.
公司具有盈利能力
B.
给外部投资者提供投资机会
C.
公司股份的流动性
D.
增加公司经营的自由度
E.
促进公司资本结构的改善
【简答题】填料组中密封元件的作用是什么？
【单选题】对“度”的理解，下列哪项是错误的?( )
A.
电表上，1度等于1千瓦小时
B.
啤酒的度数指所含酒精的体积百分比浓度
C.
眼镜片的度数为镜片屈光度的100倍
D.
煤气表上，1度煤气指在标准压强下的1立方米煤气
【单选题】下列对“度”的理解中，不正确的一项是（ ）。
A.
电表上，1度等于1千瓦/小时
B.
眼镜片的度数为镜片屈光度的100倍
C.
啤酒的度数是指所含酒精的体积百分比浓度
D.
煤气表上，1度煤气指在标准压强下的1立方米煤气
【单选题】下列关于股票的说法错误的是()。
A.
美国国籍的约翰用人民币购买了面值为10万元人民币的某A股股票
B.
英国国籍的苏珊用英镑购买了面值为10万元人民币的某B股股票
C.
甲公司在我国内地注册在香港上市,则其股票称为H股
D.
乙公司在我国内地注册在纽约上市,则其股票称为N股
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