单项选择题 Which of the following expansion devices would allow a user to utilize multiple hardware profiles to control an external display and power option?（）

单项选择题 Which of the following adapter cards allows I/O devices to be connected and transmits data using a POTS line?（）

单项选择题 Which of the following operating system types will allow a user to utilize 16GB of RAM if installed on a PC workstation?（）