皮皮学，免费搜题
登录
搜题
【单选题】
下列抽样中不是系统抽样的是 ( )
A.
从标有 1 ～ 15 号的 15 个小球中任选 3 个作为样本，先在 1 ～ 5 号球中用抽签法抽出 a 号，再将号码为 a +5 ， a +10 的球也抽出 ；
B.
工厂生产的产品，用传送带将产品送入包装车间的过程中，检验人员从传送带上每隔五分钟抽一件产品检验 ；
C.
搞某市场调查，规定在商场门口随机抽一个人进行询问，直到调查到事先规定的调查人数为止 .
D.
电影院调查观众的某一指标，邀请每排（每排人数相等）座位号为 14 的观众留下来座谈。
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】Not everyone in the world requires the same amount of living space. The amount of space a person needs around him is a cultural (文化的) difference, not an economic one. Knowing your own psychological (心...
查看完整题目与答案
【简答题】在一个单处理机系统中，存在9个进程，则最多有（）个进程处于就绪队列。
查看完整题目与答案
【判断题】Collocation refers to a combination of two or more words which frequently occur together, so it’s possible to guess the meaning of the collocation by knowing the meaning of the individual words.
A.
正确
B.
错误
查看完整题目与答案
【单选题】____________________. First, many schools require two or more years of foreign language study for graduation. Secondly, learning other languages helps us communicate with people from other countries. ...
A.
In the USA, many students study Spanish language.
B.
It is important to learn foreign languages.
C.
In college, people need to know foreign languages.
查看完整题目与答案
【单选题】关于普通计算机的主机箱中有什么，下列说法正确的是（ ）。
A.
主机箱中有电源，还有一块电路板--即主板。主板上有一个微处理器(CPU)
B.
主机箱中有电源，主板。主板上有微处理器和内存(条)；还有各种磁盘驱动器被连接到主板上进而接受CPU的控制；主板上还有若干个插槽，这些插槽可用于各种外部设备的接口电路板与主板的连接；主板上也有若干已做好的接口，直接用于连接各种外部设备
C.
主机箱中有电源和主板。主板上有微处理器和内存(条)
D.
主机箱中有电源和主板。主板上有微处理器和内存(条)；还有各种磁盘驱动器被连接到主板上进而接受CPU的控制
查看完整题目与答案
【判断题】甄选是员工招聘的关键环节。
A.
正确
B.
错误
查看完整题目与答案
【简答题】And besides having an easier time traveling or watching movies without subtitles, knowing two or more languages means that your brain may actually look and work differently than those of your friends.
查看完整题目与答案
【单选题】What is the best topic sentence? _____________ _. First, many schools require two or more years of foreign language study for graduation. Secondly, learning other languages helps us communicate with p...
A.
In the USA, many students study Spanish language.
B.
It is important to learn foreign languages.
C.
In college, people need to know foreign languages.
查看完整题目与答案
【简答题】阅读理解。 Do you want to live another 100 years or more? Some exports say that scientific advances will one day enable humans to last tens of years beyond what is now seen as the natural limit of the huma...
查看完整题目与答案
【简答题】B Not everyone in the world requires the same amount of living space. The amount of space a person needs around him is a cultural difference, not an economic one. Knowing your own psychological( 心理的 )...
查看完整题目与答案
相关题目：
【简答题】Not everyone in the world requires the same amount of living space. The amount of space a person needs around him is a cultural (文化的) difference, not an economic one. Knowing your own psychological (心...
查看完整题目与答案
【简答题】在一个单处理机系统中，存在9个进程，则最多有（）个进程处于就绪队列。
查看完整题目与答案
【判断题】Collocation refers to a combination of two or more words which frequently occur together, so it’s possible to guess the meaning of the collocation by knowing the meaning of the individual words.
A.
正确
B.
错误
查看完整题目与答案
【单选题】____________________. First, many schools require two or more years of foreign language study for graduation. Secondly, learning other languages helps us communicate with people from other countries. ...
A.
In the USA, many students study Spanish language.
B.
It is important to learn foreign languages.
C.
In college, people need to know foreign languages.
查看完整题目与答案
【单选题】关于普通计算机的主机箱中有什么，下列说法正确的是（ ）。
A.
主机箱中有电源，还有一块电路板--即主板。主板上有一个微处理器(CPU)
B.
主机箱中有电源，主板。主板上有微处理器和内存(条)；还有各种磁盘驱动器被连接到主板上进而接受CPU的控制；主板上还有若干个插槽，这些插槽可用于各种外部设备的接口电路板与主板的连接；主板上也有若干已做好的接口，直接用于连接各种外部设备
C.
主机箱中有电源和主板。主板上有微处理器和内存(条)
D.
主机箱中有电源和主板。主板上有微处理器和内存(条)；还有各种磁盘驱动器被连接到主板上进而接受CPU的控制
查看完整题目与答案
【判断题】甄选是员工招聘的关键环节。
A.
正确
B.
错误
查看完整题目与答案
【简答题】And besides having an easier time traveling or watching movies without subtitles, knowing two or more languages means that your brain may actually look and work differently than those of your friends.
查看完整题目与答案
【单选题】What is the best topic sentence? _____________ _. First, many schools require two or more years of foreign language study for graduation. Secondly, learning other languages helps us communicate with p...
A.
In the USA, many students study Spanish language.
B.
It is important to learn foreign languages.
C.
In college, people need to know foreign languages.
查看完整题目与答案
【简答题】阅读理解。 Do you want to live another 100 years or more? Some exports say that scientific advances will one day enable humans to last tens of years beyond what is now seen as the natural limit of the huma...
查看完整题目与答案
【简答题】B Not everyone in the world requires the same amount of living space. The amount of space a person needs around him is a cultural difference, not an economic one. Knowing your own psychological( 心理的 )...
查看完整题目与答案