皮皮学，免费搜题
登录
搜题
【简答题】
测定明矾中铝的质量分数,测定得平均值为 10.79 %, s = 0.042% , 查表知 t 0.05 , 8 = 2.31 , 置信度为 95% 时平均值的置信区间是 ______________________________ 。
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】What, according to the passage, might make a teacher teach punctuation before children have the ability to write sentences?
A.
The demand of a curriculum.
B.
The demand of parents.
C.
The need of children.
D.
The intention to help children in their writing.
【多选题】下列关于客人住店期间的服务工作,说法正确的有
A.
房间如使用电热水壶或饮水机，可以免去送水服务，但应每天做好相应的清洁和保养工作
B.
对没有住客送的访客要特别留意
C.
房内应配有洗衣单及一次性使用的塑料质地的洗衣袋
D.
四五星级的酒店应提供客衣的修补服务
【单选题】The family keep renting furniture as a secret because ______.
A.
their neighbors might not accept the new idea
B.
their neighbors are sure to laugh at them
C.
they like the furniture and pretend to be the owners
D.
they want to show that they are rich
【单选题】男性，56岁。因胸痛10小时来院急诊，心电图证实为急性前壁心肌梗死，该患者最常见的心律失常为
A.
室性过早搏动
B.
房室传导阻滞
C.
心房颤动
D.
房性过早搏动
E.
室上性心动过速
【简答题】In some societies people want children for what might be family reasons.
【单选题】Twenty pounds ______ enough for such a poor family to spend for a month.
A.
were
B.
being
C.
have been
D.
was
【单选题】绿源旧货回收公司为增值税一般纳税人,12月销售一批旧货,取得收入5100元(含税),购入一批旧货,价款2000元(含税)。对于此笔业务该公司应纳税额为___元
A.
98
B.
99.03
C.
35.12
D.
40.78
相关题目：
【单选题】男性，56岁。因胸痛10小时来院急诊，心电图证实为急性前壁心肌梗死，该患者最常见的心律失常为
A.
室性过早搏动
B.
房室传导阻滞
C.
心房颤动
D.
房性过早搏动
E.
室上性心动过速
参考解析：
知识点：
题目纠错 0
发布
