皮皮学，免费搜题
登录
搜题
【多选题】
种子的胚由( )等部分组成A.
胚芽
B.
胚轴
C.
胚根
D.
子叶
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】You speak, write a letter, make a telephone. Your words carry a message. People communicate （交际）with words. Do you think you can communicate without words? A smile on your face shows you are happy or ...
【单选题】某试样中Al含量平均值的置信区间为27.78%±0.1%(置信度为90%),对此结果应理解为( )
A.
在 90% 的置信度下，试样中 Al 的含量在 27.68% ～ 27.88% 范围内
B.
总体平均值 μ 落在此区间的概率为 10%
C.
若再作一次测定，落在此区间的概率为 90%
D.
有 90% 的把握试样中 Al 的含量为 27.68%
【单选题】This is the dictionary ______ I depend a lot whenever I have problems with new words.
A.
with which
B.
in which
C.
on which
D.
for which
【单选题】某试样中NaCl含量的平均值的置信区间为97%±4%(置信度为95%),说明
A.
总体平均值落在该区间的概率为49%
B.
在此区间内的测量值不存在误差
C.
在95%的置信度下,试样中NaCI的含量在93%-101%
D.
有95%的可倍度,样中NaCl含量为97%
E.
在95%的置信度下,试样中NaCl的含量为95%
【单选题】What can be inferred from the words of Robson Walton and Lee Scott?
A.
They feel content with their progress.
B.
They are optimistic about their development.
C.
They plan to expand their business.
D.
They are worried about their future.
【简答题】阅读理解。 All of us communicate with one another non-verbally, as well as with words. We gesture with eyebrows or a hand, meet someone else's eyes and look away, shift positions in a chair. These actions ...
【单选题】某试样中 Cl 含量平均值的置信区间为 36.45 ％ ±0.10 ％ ( 置信度为 90 ％ ) ，对此结果应理解为
A.
有90％的把握试样中Cl的含量为36.35％
B.
总体平均值μ落在此区间的概率为10％
C.
若再作一次测定，落在此区间的概率为90％
D.
有90％的把握试样中Cl含量在36.35％～36.55％范围内
E.
在此区间内的测量值不存在误差
【单选题】A good advertisement often uses words ________ people attach positive meanings.
A.
that
B.
to which
C.
with which
D.
which
【简答题】Matche the words with their explanations.
相关题目：