皮皮学，免费搜题
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【单选题】
下列哪些因素不能影响的工人均衡工资A.
教育
B.
经验
C.
同行业竞争者数量增加
D.
货币发行量
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】Why do some publishers no longer promote their books?
A.
Because the paper books are not profitable enough to sustain promotion.
B.
Because Amazon's near monopoly over the industry makes promotion unnecessary.
C.
Because the public have easy access to the books' sales and reviews.
D.
Because all the writers are promoting the books on their own.
【简答题】按传播声道分：超声波流量计可分为（）和多声道，其中多声道又可分为双声道、四声道、八声道。
【简答题】声道分为:
【单选题】What are editors and publishers doing to attract non-readers?
A.
Lowering the prices of their newspapers.
B.
Shortening their news stories.
C.
Adding variety to their newspaper content.
D.
Including more advertisements in their newspapers.
【单选题】Why are publishers making their books freely available?
A.
They want to make money.
B.
They do not like to lose their audience.
C.
They are competing for fun.
D.
They try to win more freedom.
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