● Windows provides a user－friendly graphical （71） including pop－up menus, scrollbars, dial

Operating systems provide （） between users and the computer.A.a linkB.an interfaceC.devic

● Windows provides a user－friendly graphical （71） including pop－up menus, scroll bars, dia

● Windows provides a user－friendly graphical （71） including pop－up menus, scroll bars, dia

● Windows provides a user－friendly graphical （71） including pop－up menus, scrollbars, dial

●在Windows系统中，默认权限最低的用户组是（40)。（40) A.everyone B.administrators C.power users

●The operating system provides an easy－to－use （73) to users.（73)A. interface B. hardware C