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【单选题】
某试样中Ca 2+ 含量平均值的置信区间为42.26%±0.10%(置信度为95%),对此结果应理解为( )
A.
在95%的置信度下,试样中Ca 2+ 的含量在42.16%~42.36%之间
B.
总体平均值落在此区间的概率为10%
C.
在此区间内的测量值不存在误差
D.
有95%的把握试样中Ca 2+ 的含量为42.26%
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参考答案:
举一反三
【单选题】When new shares of stock are sold at a price greater than par value, the excess over par is recorded as:
A.
authorized capital.
B.
capital surplus.
C.
retained earnings.
D.
treasury stock.
【单选题】某公司2016年1月初,“应付账款”科目贷方余额为30 000元,当月预收购货单位订金1 000元,欠供货商货款23 400元(含增值税3 400元),已归还原欠货款20 000元,则1月“应付账款”科目期末余额为( )元。
A.
33 400
B.
29 000
C.
31 000
D.
34 400
【判断题】信息性是房地产项目策划的基础性原则,也是关键性原则。​( )
A.
正确
B.
错误
【单选题】听力原文: A New York stock exchange stops trading after the steepest falls in share prices for ten years. Following earlier falls in Hong Kong, stocks fell steadily from the opening of trading on Wall Str...
A.
share prices reach a record low.
B.
trading has been suspended twice.
C.
the world economy is rather weak.
D.
market mechanisms are not functioning well.
【单选题】页面设置即页面属性设置,下面不属于页面设置的是( )。
A.
外观
B.
文字
C.
链接
D.
标题
【判断题】微机型备用电源自动投入装置若合闸于故障母线上,则继电保护加速动作使 3QA 立即跳闸,此时母线 I 无电压, prefix="v" ns="urn:schemas-microsoft-com:vml" prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace> ?xml:namespace> 不能“充电”,装置不能...
A.
正确
B.
错误
【单选题】When the monetary policy becomes tigher, which of following is most impossible to happen?
A.
Gold price increases
B.
U.S. Treasury yield increases
C.
Stock Index rockets
D.
U.S. Dollar appreciates
【单选题】——Excuse me, but could you please turn the radio down? ——Sorry, I _________ you could hear it.
A.
don’t realize
B.
haven’t realized
C.
didn’t realize
D.
hadn’t realized
【单选题】—Sorry, could you say it again? ________ —OK. [     ]
A.
The line is bad.
B.
I can hear you.
C.
The line works well.
D.
I can hear something.
【单选题】An open market purchase occurs when
A.
the Fed buys government securities from a bank.
B.
a bank buys government securities from the Fed.
C.
a securities dealer buys shards of stock from the Fed.
D.
the Treasury buys government securities from the Fed.
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