【单选题】某吸附指示剂 pKa=5.0 ,以银量法测定卤素离子时, pH 应控制在( )
【判断题】若债券利息率、筹资费率和所得税率均已确定,则企业的债券资金成本也就确定了。
【单选题】Choose the best paraphrase for the following source:More than 300 historians reacted by signing an open letter to the Guardian newspaper in which they said: "As historians of Britain and of Europe, we...
A.
Many historians in the UK are in favor of remaining in the European Union and over 300 of them signed an open letter to the Guardian about Britain's significant place in Europe.
B.
Over 300 historians signed an open letter to the Guardian, claiming that Britain has always been having an irreplaceable role to play in Europe.
C.
Historians claimed that they believed that Britain had always been playing an irreplaceable role in Europe.
D.
According to a report from China Daily, more than 300 historians signed an open letter to the Guardian newspaper in which they said: "As historians of Britain and of Europe, we believe that Britain has had, in the past, and will have in the future, an irreplaceable role to play in Europe."
【判断题】约首是指合同的首部,一般包括合同名称、合同编号、缔约双方的名称和地址、签约时间、签约地点以及合同序言等内容。
【判断题】若债券利息率、筹资费率和所得税率均已确定,则企业的债务成本与发行债券的价格无关。
【单选题】某吸附指示剂 pKa=5.0 ,以银量法测定卤素离子时, pH 应控制在( )