皮皮学，免费搜题
登录
logo - 刷刷题
搜题
【单选题】
为了解某校学生近视的患病情况,调查者在全校50个班级中随机抽取10个班级,然后调查这10个班级的所有学生。这种抽样方法是:
A.
单纯随机抽样
B.
系统抽样
C.
整群抽样
D.
分层抽样
E.
多阶段抽样
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案：
举一反三
【判断题】You should memorize what you are going to say before the seminar.
A.
正确
B.
错误
查看完整题目与答案
【多选题】What are the symptoms(症状) of the disease?
A.
fever（发烧）
B.
cough（咳嗽）
C.
fatigue（呼吸衰竭）
D.
shortness of breath（呼吸急促）
E.
go blind ( lose one's sight)（失明）
F.
have a broken leg
G.
have a heart disease（心脏病）  or have a stroke （中风）
查看完整题目与答案
【单选题】The symptoms of Alzheimer's disease were long dismissed as normal consequences of human aging, but in the 1980's the disease came to be recognized as the most common cause of intellectual deterioratio...
A.
In the past, Alzheimer's disease has often been mistaken as normal human aging.
B.
Victims of Alzheimer's disease rarely need to he institutionalized.
C.
There is currently no cure for Alzheimer's disease.
D.
The primary symptoms are serious forgetfulness and confusion.
查看完整题目与答案
【单选题】The symptoms of Alzheimer' s disease were long dismissed as normal consequences of human aging, but in the 1980' s the disease came to be recognized as the most common cause of intellectual deteriorat...
A.
In the past, Alzheimer' s disease has often been mistaken as normal human aging.
B.
Victims of Alzheimer' s disease rarely need to be institutionalized.
C.
There is currently no cure for Alzheimer's disease.
D.
The primary symptoms are serious forgetfulness and confusion.
查看完整题目与答案
【单选题】In' The major debilitating symptoms of Alzheimer's disease include serous forgetfulness -- particularly about recent events-- and confusion.', ' debilitating' means ______.
A.
deceasing
B.
declining
C.
serious
D.
degrading
查看完整题目与答案
【判断题】If you are in a foreign country, you should memorize a few key phrases and dress according to local fashion
A.
正确
B.
错误
查看完整题目与答案
【单选题】Will the people who do not have disease symptoms transmit coronavirus to others?
A.
Yes, the early reports have proven this to be true.
B.
No, the early reports have not proven this to be true.
C.
Yes, the closer reports have proven this to be true.
D.
No, the closer reports have not proven this to be true.
查看完整题目与答案
【单选题】You should memorize your passport number _____ you lose it.
A.
at case
B.
in the case
C.
in case
查看完整题目与答案
【单选题】--- What should I do to learn English well as a beginner? --- ______, you should memorize some words.
A.
In the end
B.
In this way
C.
To start with
D.
To my surprise
查看完整题目与答案
【单选题】【真题】有以下程序段: #include int i,n; for(i=0;i<8;i++) { n=rand() % 5; switch (n) { case 1: case 3:printf("%d \n",n);break; case 2: case 4:printf("%d \n",n);continue; case 0:exit(0); } printf("%d \n",n); } 以...
A.
for循环语句固定执行8次
B.
当产生的随机数n为4时结束循环操作
C.
当产生的随机数n为1和2时不做任何操作
D.
当产生的随机数n为0时结束程序运行
查看完整题目与答案
相关题目：
【判断题】You should memorize what you are going to say before the seminar.
A.
正确
B.
错误
查看完整题目与答案
【多选题】What are the symptoms(症状) of the disease?
A.
fever（发烧）
B.
cough（咳嗽）
C.
fatigue（呼吸衰竭）
D.
shortness of breath（呼吸急促）
E.
go blind ( lose one's sight)（失明）
F.
have a broken leg
G.
have a heart disease（心脏病）  or have a stroke （中风）
查看完整题目与答案
【单选题】The symptoms of Alzheimer's disease were long dismissed as normal consequences of human aging, but in the 1980's the disease came to be recognized as the most common cause of intellectual deterioratio...
A.
In the past, Alzheimer's disease has often been mistaken as normal human aging.
B.
Victims of Alzheimer's disease rarely need to he institutionalized.
C.
There is currently no cure for Alzheimer's disease.
D.
The primary symptoms are serious forgetfulness and confusion.
查看完整题目与答案
【单选题】The symptoms of Alzheimer' s disease were long dismissed as normal consequences of human aging, but in the 1980' s the disease came to be recognized as the most common cause of intellectual deteriorat...
A.
In the past, Alzheimer' s disease has often been mistaken as normal human aging.
B.
Victims of Alzheimer' s disease rarely need to be institutionalized.
C.
There is currently no cure for Alzheimer's disease.
D.
The primary symptoms are serious forgetfulness and confusion.
查看完整题目与答案
【单选题】In' The major debilitating symptoms of Alzheimer's disease include serous forgetfulness -- particularly about recent events-- and confusion.', ' debilitating' means ______.
A.
deceasing
B.
declining
C.
serious
D.
degrading
查看完整题目与答案
【判断题】If you are in a foreign country, you should memorize a few key phrases and dress according to local fashion
A.
正确
B.
错误
查看完整题目与答案
【单选题】Will the people who do not have disease symptoms transmit coronavirus to others?
A.
Yes, the early reports have proven this to be true.
B.
No, the early reports have not proven this to be true.
C.
Yes, the closer reports have proven this to be true.
D.
No, the closer reports have not proven this to be true.
查看完整题目与答案
【单选题】You should memorize your passport number _____ you lose it.
A.
at case
B.
in the case
C.
in case
查看完整题目与答案
【单选题】--- What should I do to learn English well as a beginner? --- ______, you should memorize some words.
A.
In the end
B.
In this way
C.
To start with
D.
To my surprise
查看完整题目与答案
【单选题】【真题】有以下程序段: #include int i,n; for(i=0;i<8;i++) { n=rand() % 5; switch (n) { case 1: case 3:printf("%d \n",n);break; case 2: case 4:printf("%d \n",n);continue; case 0:exit(0); } printf("%d \n",n); } 以...
A.
for循环语句固定执行8次
B.
当产生的随机数n为4时结束循环操作
C.
当产生的随机数n为1和2时不做任何操作
D.
当产生的随机数n为0时结束程序运行
查看完整题目与答案
参考解析：
知识点：
题目纠错 0
发布
创建自己的小题库 - 刷刷题