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【单选题】
测定SO2的质量分数,得到下列数据(%)28.62,28.59,28.51,28.52,28.61;则置信度为95%时平均值的置信区间为( )。 (已知置信度为95%,n=5,t=2.776)A.
28.56±0.12
B.
28.57±0.13
C.
28.56±0.13
D.
28.57±0.12
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举一反三
【单选题】What she suggested at the meeting was that we ______ cancel the original plan.
A.
should
B.
could
C.
would
D.
must
【简答题】She suggested at the meeting that we ______ cancel the original plan. A) should B) could C) would D) must
【简答题】A．She is very interested in the new products. B．The man likes what she suggested. C．She will have to think of new ideas. D．She was not sure of the regulations.
【单选题】失血性休克早期引起的缺氧其血氧变化特点为
A.
动脉血氧含量降低
B.
静脉血氧含量升高
C.
动-静脉血氧含量差减小
D.
动-静脉血氧含量差增大
E.
静脉血氧分压升高
【单选题】Many students will take part in the school sports meeting this week, so she suggested that the class meeting ______ held on Saturday. [ ]
A.
not be
B.
not to be
C.
be not
D.
be not to
【单选题】为早期发现肺炎患者是否发生感染性休克，应特别注意观察的是() A 体温变化 B 心率变化 C 血压变化
A.
（2016主管护师专业实践能力真题）为早期发现肺炎患者是否发生感染性休克，应特别注意观察的是() A 体温变化
B.
心率变化
C.
血压变化
D.
肺部体征变化
E.
血象变化
【单选题】She suggested______ another day in the countryside.
A.
our spending
B.
for spending
C.
to spend
D.
spending
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