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22．A hydrapuler is _________．
A． a huge mixing machine
B． a machine that recycles rubbish
C． a machine that makes rubbish
D． a machine that can wash something
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AEach day every person in the United States throws away more than five pounds of rub-bish． There is more rubbish now than ever before and most of it is made up of the packages and cans in which we buy our food．The traditional ways of getting rid of solid wastes is quickly be-coming inadequate(不合适)． Many cities are experimenting with newer ways of handling their growing piles of rubbish．One of these new ways is "recycling"． Through recycling，usable materials are taken out of wastes and added into something else． These usable parts of wastes are put through the cycle of going from a raw material（原材料） to a finished product again．In some cities a machine called a hydrapuler (The machine got and named from hydra，which :means "fwater ．)is being used to help recycle rubbish A hydrapuler is like a huge mixing machine．The rubbish is dumped onto endless moving belt that feeds the machine． At the same time，water is pumped into the hydrapuler． With a whirling(旋转) and mixing action，the hydrapuler throws out the．heavy metal objects that can later be sold as waste metal． The rest of the rubbish-paper，food，plastic．rubber，rags，glass，wood，leaves，and other things disintegrates（碎裂） ，or falls apart． The rubbish is then mixed with water and carried in a slush(泥状物) to another piece of equipment where glass，sand and small pieces of metal come out．With the hydrapuler，up t0 95 percent of the original rubbish is reclaimed． The remainder is turned into ash．( ) 21． Rubbish means___________-A． packagesB． cansC． wastesD． heavy metal objects
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24． Which of the following is TRUE?A． All the cities are using hydrapulers．B． All the rubbish is made up of the packages and cans．C． In the course of recycling，water is needed in the hydrapuler．D． The Americans only eat the food in packages and cans．
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共用题干
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单选题An administrator performs a Live Partition Mobility operation. After the operation completes， the administrator runs errpt -a. What is the machine ID reported by errpt command？（）A
The machine ID of the machine that logged the errorB
The machine ID of the machine that it is currently running onC
The administrator defined machine ID in the /etc/machineid fileD
The machine ID of the machine that the operating system was originally started on
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单选题Which information is required to get the feature activation codes（）A
machine serial number， model， and machine signatureB
model， disk size， and machine serial numberC
model， Storage Managerversion， and machine signatureD
model， WWNN， and machine serial number
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单选题You must _____ the rubbish before you leave the office.A
dispose ofB
deal withC
cope withD
treat with
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名词解释题水力混合（hydraulic mixing）
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