【单选题】—Well, honey, I'm sorry but I have to board. —________, and God bless you when you are in Libya. [ ]
【单选题】将刚体平面运动分解为平移和转动,它相对于基点A的角速度和角加速度分别用wA和eA表示,而相对于基点B的角速度和角加速度分别用wB和eB表示,则
A.
w A = w B , e A = e B ;
B.
w A = w B , e A ¹ e B ;
C.
w A ¹ w B , e A = e B ;
D.
w A ¹ w B , e A ¹ e B .
【单选题】Student A: May I use your computer this afternoon? Student B: I'm sorry, but I have to finish typing this term paper today. Student A: ______
C.
Thank you all the same.
【单选题】I'm sorry but I can't help you with your trouble. For______ thing, I have no time; for ____ thing, I'm in trouble myself these days.
【单选题】— Well, Jack, I'm sorry but I have to go home. — ________.I hope to hear from you soon. [ ]