The seismograph is most useful in______.
A. controlling faults
B. pinpointing the location of shock waves
C. preventing destruction
D. warning of forthcoming earth tremors
查看答案
The most frequent cause of major earthquakes is______.
A. faulting
B. folding
C. landslides
D. tidal waves
dmz区域(非军事化区)的安全级别中等，因为需要对外开放某些特定的服务和应用，受一定的保护，是安全级别较低的区域。()
ieee最初制定的无线局域网标准是ieee802.1。()
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