单项选择题
According to Ohm’s Law， which of the following is correct？（）
A.As voltage increases， resistance decreases B.As amperage decreases， resistance decreases C.As resistance decreases， amperage increases D.As resistance increases， voltage increases
单项选择题 Whenconfiguringsurroundsoundsystems，speakerdelayisusedtocompensateforspeaker（）.
单项选择题 WhichofthefollowingBESTdescribesCAT5e？（）
单项选择题 RG-6coaxialcableistypicallyusedinallofthefollowingapplications：（）
