在期权合约的内容中，最重要的是（） ["期权费","协定价格","合约期限","合约数量"]
Which of the following is correct regarding full-state backups?（） ["used for either a single or dual UCS catastrophic failure","can be restored with no special requirements","stored as gzipped tarball","easy to modify as needed"]
属于易燃介质是（） ["氢气","氧气","甲烷","水蒸气"]
在汽车气压制动原理图上，符号代表的元件是（）。 ["储气筒","单向阀","空压机","气压表"]
You need to reduce the level of access that a malicious Web site might have to your computer. What should you do？ （） ["Start a Windows Defender scan.","Enable Microsoft Windows Internet Explorer Phishing Filter.","Enable Microsoft Windows Internet Explorer Pop-up Blocker.","Confirm that Microsoft Windows Internet Explorer Protected Mode is enabled on the Internet security zone."]
画出计算机硬件系统的组成图。
