B．弹簧的劲度系数
C．弹簧的形变量
D．弹簧的原长
BC
当船员听到火灾警报后，应迅速携带规定的消防器材到主甲板集合。
— Would you like to go out for a walk with us?
— _____, I don't have to do my homework now.[ ]
A. I'm sorry, I can't.
B. Yes, I will.
C. Yes, I do.
D. I'd like to
