【单选题】使用止血带进行包扎止血时,下列做法错误的是
A.
每小时最好放松一次止血带,松解时间3~5分钟即
【简答题】A typist types four envelopes and four letters. She places the letters in the envelopes at random. What are the chances that only three letters are in their correct envelopes?
【单选题】Among four types of famous inkstone in China, ______ is made from mud.
【单选题】在PowerPoint2010中,如果要从第3张幻灯片跳转到第8张幻灯片,需要在第三张幻灯片上设置( )?