<span>Total number of pages. The use of a fax cover sheet provides the name, address and phone number of the sender, the fax number and name of the recipient and the number of pages being transmitted.
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Well we have SRAM(Static Random Access Memory) is faster, have a lower density but it is more expensive.
While DRAM(Dynamic Random access memory) is just the opposite.
Those are the only two, I know exist.
Crime rate
unemployment
fluctuations
suspension of terrorism