【简答题】A.He was housed by Emma Thompson five years ago. B.He has graduated from an England university. C.He has become a British citizen. D.He will be 15 years old in April.
【简答题】已知电路如图所示,R 1 =10Ω,R 2 =40Ω,R L =10Ω,L 1 =5H,L 2 =1H,M=0.5H, ,ω=100rad/s,试求 和 。
【单选题】下面的选项不属于关系数据库的性质的是( )
【判断题】因为极限偏差有正负,所以尺寸公差值可以是0或正值。
【单选题】(Even though) Sedat (has been studying) English for three years before he came (to the United States), It is still difficult for him (to express himself).
【简答题】根据短文后所给的任务,完成小题. Now the idea of “car sharing” has become popular in Europe and the United States. That’s to say, people share(分享) one car, not each person has one . (65) As we know, most cars are par...
【单选题】以下数据库系统中不属于关系型数据库的是 。
【简答题】电路如图所示。已知 RL= 5Ω,试求电路中的电流 I 。