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若采取每天延长工作时间方式赶工，延时加班时间内平均降效10%，每天需增加多少工作时间(按小时计算，计算结果保留2位小数)每天需额外增加多少费用

答案

参考答案：该分包商推迟开工延误的时间=18-11=7天
该分包商延误的工时数=7×8×20=1120小时
该分包商每天需增加的工作时间=[*]
该分包商每天需额外增加的费用=2.71×7.5×20×23×120%=11219.4元

判断题

对二氧化硫转化反应，如果控制得当，实际转化率有可能高于平衡转化率。
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单项选择题

Rapid advances in computer and communication technologies have resulted in the (71) merger of these two fields. The lines have bluned among computing, switching, and digital transmission equipment, and the same digital techniques are being used for data, voice, and image transmission. Merging and evolving technologies, coupled with increasing demands for efficient and timely collection, processing, and (72) of information, are leading to the development of (73) that transmit and process all types of data. The ultimate goal of this evolution is something its proponents-some of the most powerful forces in the computing and telecommunications industries-call the (74) .The (74) will be a worldwide public telecommunications network that will deliver a wide variety of services. The (74) will be defined by the standardization of user interfaces, and will be implemented as a set of digital switches and paths supporting a broad range of traffic types and providing (75) processing services. Inpractice, there will be multiple networks, implemented within national boundaries, but from the user’s point of view there will be a single, uniformly accessible worldwide network.

A．decreasing
B．increasing
C．collective
D．single
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