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【单选题】
实验室“三废”包括下列三种物质;A.
废气、废水、固体废物
B.
废气、废屑、非有机溶剂
C.
废料、废品、废气
D.
废气、废屑、废品
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【单选题】You install Windows 2000 Professional on a new APM-compliant portable computer. You notice that whenever you attempt to shut down the computer, the Windows 2000 shutdown screen remains on the screen a...
A.
Restart the computer, disable APM in the system BIOS, and then restart the computer.
B.
Restart the computer, use power options in control panel to enable APM, and restart the computer.
C.
Restart the computer, use power options in control panel to enable hibernate support, and then restart the computer.
D.
Restart the computer, use power options in control panel to create a different power scheme, and then restart the computer.
【单选题】To figure out how much power these devices are using, Callie Babbitt and her colleagues at the Rochester Institue of Technology in New York tracked the environment costs for each product throughout it...
A.
figure out
B.
tracked
C.
are mined
D.
stop using
【单选题】The data saved in VDR should be kept for at least ______ before being covered by new. When lose emergency power, VDR can still record for ______ using backup power source.
A.
12 hours / 2 hours
B.
2 hours / 30 minutes
C.
2 hours / 2 minutes
D.
120 hours / 8 hours
【简答题】Today just as technology changed the face of industry, farms have undergone an “agricultural revolution ”. On the farm of today, machines provide almost all the power. One of the most important benefi...
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