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【单选题】
以下属于随机抽样的是A.
配额抽样
B.
整群抽样
C.
方便抽样
D.
滚雪球抽样
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反馈参考答案：
举一反三
【单选题】Obama,as well as Tom,__the basketball games.
A.
join
B.
joins
C.
take part in
D.
takes part in
【单选题】并行性指两个或多个事件在（）发生，并发性指两个或多个事件在（）发生。
A.
同一时刻；不同时刻
B.
同一时刻；同一时间间隔
C.
同一时间间隔；同一时刻
D.
同一时间间隔；不同时刻
【单选题】Ostensibly(表面上), the Alcoa project was intended to save one of these dying regions—the remote and sparsely populated east—where the way of life had steadily declined to a point of desperation and gloo...
A.
fewer fishing companies.
B.
fewer jobs available.
C.
migration of young people.
D.
imposition of fishing quotas.
【简答题】Translate the following sentences into Chinese. She seemed frozen in an eternal panic lest the bath towel slip down any farther. Whenever
I found myself in a penal position before the head's de...
【单选题】____ the gloom was a prediction by a top banking assciation that said the worse has yet to come for the world economy.
A.
adding to
B.
worsening
C.
in
【简答题】简述细菌摄取氨基酸的方式。
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