A．(n)______ allows users to scramble and unscramble their messages easily without a third partyintruding．

A．DES

B．signing messages

C．encrypt

D．firebreak

[单选题]A multimedia system allows end users to share，transfer and process avariety of forms of information in a (75) manller.(75) A．fixedB．fixC．unifyingD．unified

[单选题]A multimedia system allows end users to share， transfer and process a varie

[单选题](72) is a device that allows a computer to transmit information over a telephone line.(72) A．DiskB．ModemC．PrinterD．Display

[单选题]_____ allows for expansion and water make up in the water cooling system.A．A top tankB．A head tankC．A head valveD．A drain tank

[单选题] Risk management allows the project manager and the project team not to（71）.（71）A．eliminate most risks during the planning phase of the projectB．identify project risksC．identify impacts of various risksD．plan suitable responses

[单选题]Risk management allows the project manager and the project team not to (71).A．eliminate most risks during the planning phase of the projectB．identify project risksC．identify impacts of various risksD．plan suitable responses

[单选题]Risk management allows the project manager and the project team not to(71)． A．eliminate most risks during the planning phase of the project B．identify project risks C．identify impacts of various risks D．plan suitable responses

[单选题]（） allows for expansion and water make up in the water cooling system.A . A top tankB . A head tankC . A head valveD . A drain tank

[试题]C．omputerpowernowallowsautomaticsearchesoffingerprintfilestomatchaprintatacrime______.A．)stageB)sceneC)locationD)occasion

[单选题] CMOS SETUP utility allows you to change your system （73） by selecting a variety of options.（73）A． devicesB． softwareC． configurationD． size