【单选题】齿数为50的正常齿制的标准直齿外齿轮,______________直径最小。
【单选题】听力原文:W: I'm sorry for that. (13)
【单选题】水轮机能量转换过程中产生能量损失,对效率大小起决定作用的是 ( )
【单选题】—Excuse me. Is ______ e-dictionary yours? —Oh, yes. I am looking for it everywhere. Thank you very much.
【简答题】TED Talk how to spot liar-vocabulary preview
【单选题】给出一个三类问题,其判别函数如下: d1(x)=-x1,d2(x)=x1+x2-1,d3(x)=x1-x2-1 设这些函数是按【图片】两分法确定的,则(0,0),(2,2),(-2,5)分别属于:
【单选题】Take these pills three times a day. Come back and see me in a week.()
A.
Thank you very much indeed.
C.
I haven't decided yet.
【简答题】-Your skirt is so nice. -__________. A.It’s not nice B.No, it isn’t C.You’re welcome D.Thank you very much.