In Webex, check out Options > Audio and manually pick out your preferred audio system with the dropdown menu. Assure both of those the speaker and microphone are established to the correct units. 你记忆中肯定就是那句话提供了证据。但是答案中居然没有那句话？这是怎么回事？因为你很有可能没看清楚题目。有的时候寻证题并不是问你上一道题的证据在哪里，而是问你一个另外的事情。所以看清题目很重要... https://bookmarkize.com/story20424187/5-simple-statements-about-smokes-delight-explained