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【单选题】
关于有效数字的描述，下述说法不正确的是（ ）。A.
有效数字不仅反映数值的大小，而且反映测量的准确性
B.
有效数字就是计量仪器能测量到的数字
C.
有效数字全部是准确值
D.
有效数字包含全部准确值及一位可疑值
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反馈参考答案：
举一反三
【单选题】________about the result of the experiment，he still wants to give it a try．
A.
Uncertain as he is
B.
As uncertain he is
C.
As he is uncertain
D.
Uncertain is he as
【单选题】A) He has already got the result. B) He took it two weeks ago. C) The result is still unknown. D) The test will be available.
A.
He has already got the result.
B.
He took it two weeks ago.
C.
The result is still unknown.
D.
The test will be available.
【简答题】服务组合是满足顾客的某种需求利益,由 和 共同组成的一组服务产品。
【单选题】When one is having a cold，he may often have a1l the following symptoms EXCEPT．
A.
coughing．
B.
having a sore throat．
C.
having a runny nose．
D.
having a stomachache
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