【判断题】基尔霍夫第二定律(电压定律)指明的是:电路中,沿任一回路循一个方向,在任一时刻其各段的电压代数和恒等于零。( )
【简答题】在电子邮件服务器中,( )用于保存每位用户的电子邮件。
【单选题】Persons who are overweight should watch their diet carefully in order to lose pounds. The best way to do this is to start a weight control program. At first it is wise to talk with your doctor. He can...
A.
his health is good enough to do so
C.
he has worked out a weight control program.
D.
he knows how many calories he should have each day.
【简答题】基尔霍夫第二定律答案:电压定律指明的是:电路中,沿任一回路循一个方向,在任一时刻其各段的电压代数和恒等于零。
【判断题】in order to tell you what I believe, I must briefly bring up something from my personal history
【简答题】英译汉: In order to tell you what I believe, I must briefly bring up something from my personal history.
【单选题】We are pleased to tell you that the goods () in your order have been sent to you today.
【单选题】I'm ____________ my suitcase. [ ]
【判断题】影响货物保管质量的内在因素包括货物的物理性质、化学性质、机械性质。