日韩欧美亚洲 _ 欧美亚洲一区 _ 日本亚洲欧美 _ 亚洲精品欧美 国产白袜脚足J棉袜在线观看_亚洲熟妇av一区二区三区_久久天天躁狠狠躁夜_精品众筹模特私拍在线

單項選擇題

A user reports that a newly installed external CD-RW is not working. Jill, a technician, is called and notes the user has the CD-RW drive, a flash disk, a rarely used external hard drive and a wireless network adapter plugged into an external USB hub.
Which of the following is the MOST likely reason for the problem?()

A. The USB hub needs more USB ports.
B. The USB hub is a version 1.1.
C. The USB hub was not externally powered.
D. The USB hub is a version 2.0.

微信掃碼免費搜題