【单选题】某女,35岁,多年前生一男孩。因工作繁忙、经常搬家、劳累,现已闭经。闭经的原因最可能是
【单选题】听力原文:W: We are going to the coffee shop. Aren't you coming? M: Sorry, I'm waiting for an important call. Maybe next time. W: Ok, have a good day. What does the man imply?
B.
He want to call someone.
C.
He can't wait any longer.
D.
He wants to drink a cup of coffee very much.
【单选题】某女.35岁,多年前生一男孩,因工作繁忙,经常搬家,劳累,现已闭经,闭经的原因是
【简答题】如图所示的电路中已知I 1 =0.01A,I 2 =0.3A,则I 3 = A
【单选题】如图所示电路中,已知I 1 =0.3A,I 2 =0.5A,I 3 =1A则电流I 4 等于()