手表闹钟怎么调声音 楼主设定的时间是24小时制，还是分上下午的，举个例子你想他早上7点响，但是设定的确是晚上7点，建议你看一下吧.以前我也这样，哈哈.注意设定闹钟时间是am还是pm.
将闹钟设置在6：45并置于真空中，时间到了6：45，小明___（填“能”或“不能”）听到闹钟铃声，这是因为___． 将闹钟设置在6：45并置于真空中，时间到了6：45，闹钟发出声音，但声音不能在真空中传播，故小明不能听到闹钟铃声．故答案为：不能；真空不能传声．
英语翻译 1.I didn't wake up until I heard the alarm.2.It is because you were doing your homework that I didn't tell you about this.3.Although he is serious，but I find it not difficult to get along with him.4.Do not blame him any more.He didn't hurt you on purpose.5.It's the first time that I attend such an important meeting.6.There was a time when I loved writing so much that I dreamed of becoming a writer.7.I just want to tell you that I could never have finished this book without your help.8.Do not tell me how dilligent you are.Just tell me what you've got done.9.He did want to make friends with you.10.While walking his dog，he happened to meet his favourite singer.
