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【单选题】
在总体单位中不进行任何有目的的选择,而是按随机原则,纯粹是偶然的方式抽取样本的技术是,
A.
简单随机
B.
系统随机
C.
，整群随机
D.
 分层随机抽样，
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参考答案：
举一反三
【单选题】In the passage the author wants the marketers to understand that__________
A.
advertising to children must stop
B.
a libertarian view in advertising is unethical
C.
advertising to children must have a clear purpose
D.
children must be treated differently when advertising
查看完整题目与答案
【简答题】背景 某全现浇塔楼住宅工程，地下2层、地上28层，建筑面积17656㎡。该工程项目周围为已建工程，NNIN地Nd,，现场道路按3m考虑并兼作消防车道，路基夯实，上铺150mm厚砂石，并做混凝土面层。搅拌机棚、砂石料只能在与已建工程之问的间隙堆放。现场布置两个消火栓，间距100m，其中一个距拟建建筑物4m，另一个距临时道路2.5m。供电设施已按照供电设计和施工总平面图布置完毕，施工现场临时用电配置，...
查看完整题目与答案
【单选题】What is the idea that the author wants to convey in paragraph 5 ? 查看材料
A.
Life is doomed to be full of distresses.
B.
Changes are the constant theme of life.
C.
Friendship stays despite changes in life.
D.
Life consists of sweating and harvesting.
查看完整题目与答案
【判断题】自适应前照灯系统常用的高度调整电动机主要有直流电动机和交流电动机。
A.
正确
B.
错误
查看完整题目与答案
【单选题】What is it that the author wants to ______ to his readers through the story?
A.
convey
B.
convince
C.
convert
D.
conform
查看完整题目与答案
【单选题】在防水层与基层之间设置 ( ) ,让防水层能自由伸缩并提高抗伸缩变形能力。
A.
隔离层
B.
找平层
C.
找坡层
D.
保温隔热层
查看完整题目与答案
【单选题】By this passage, the author mainly wants to highlight ______.
A.
the magic power of computers
B.
the importance of an optimistic outlook
C.
the power of creativity and intelligence
D.
the influence of technological development
查看完整题目与答案
【单选题】The author of the passage wants to tell that ______.
A.
In soccer and basketball, the ethnic tide is different.
B.
in Washington several games are played in one day
C.
Americans like all kinds of games
D.
the American games are watched by native-Americans and played by people from different countries
查看完整题目与答案
【判断题】自适应前照灯系统常用的高度调整电动机主要有直流电动机和步进电动机。
A.
正确
B.
错误
查看完整题目与答案
【单选题】The author wants to convey in the last paragraph that ______.
A.
china is booming and everyone wants to participate in it.
B.
china is well on the way of promoting its culture and language.
C.
the development of China attracts more people to study Chinese.
D.
today people must get prepared for the interconnected world.
查看完整题目与答案
相关题目：
【单选题】In the passage the author wants the marketers to understand that__________
A.
advertising to children must stop
B.
a libertarian view in advertising is unethical
C.
advertising to children must have a clear purpose
D.
children must be treated differently when advertising
查看完整题目与答案
【简答题】背景 某全现浇塔楼住宅工程，地下2层、地上28层，建筑面积17656㎡。该工程项目周围为已建工程，NNIN地Nd,，现场道路按3m考虑并兼作消防车道，路基夯实，上铺150mm厚砂石，并做混凝土面层。搅拌机棚、砂石料只能在与已建工程之问的间隙堆放。现场布置两个消火栓，间距100m，其中一个距拟建建筑物4m，另一个距临时道路2.5m。供电设施已按照供电设计和施工总平面图布置完毕，施工现场临时用电配置，...
查看完整题目与答案
【单选题】What is the idea that the author wants to convey in paragraph 5 ? 查看材料
A.
Life is doomed to be full of distresses.
B.
Changes are the constant theme of life.
C.
Friendship stays despite changes in life.
D.
Life consists of sweating and harvesting.
查看完整题目与答案
【判断题】自适应前照灯系统常用的高度调整电动机主要有直流电动机和交流电动机。
A.
正确
B.
错误
查看完整题目与答案
【单选题】What is it that the author wants to ______ to his readers through the story?
A.
convey
B.
convince
C.
convert
D.
conform
查看完整题目与答案
【单选题】在防水层与基层之间设置 ( ) ,让防水层能自由伸缩并提高抗伸缩变形能力。
A.
隔离层
B.
找平层
C.
找坡层
D.
保温隔热层
查看完整题目与答案
【单选题】By this passage, the author mainly wants to highlight ______.
A.
the magic power of computers
B.
the importance of an optimistic outlook
C.
the power of creativity and intelligence
D.
the influence of technological development
查看完整题目与答案
【单选题】The author of the passage wants to tell that ______.
A.
In soccer and basketball, the ethnic tide is different.
B.
in Washington several games are played in one day
C.
Americans like all kinds of games
D.
the American games are watched by native-Americans and played by people from different countries
查看完整题目与答案
【判断题】自适应前照灯系统常用的高度调整电动机主要有直流电动机和步进电动机。
A.
正确
B.
错误
查看完整题目与答案
【单选题】The author wants to convey in the last paragraph that ______.
A.
china is booming and everyone wants to participate in it.
B.
china is well on the way of promoting its culture and language.
C.
the development of China attracts more people to study Chinese.
D.
today people must get prepared for the interconnected world.
查看完整题目与答案
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