A:读出液体的体积
B:给液体加热
C:称取固体NaOH
D:检查气密性
— Would you like to go to the concert with me tonight?
— I'd love to, I can't. I have a lot of homework to do.
在一艘做匀速直线运动的游轮上,某同学朝各个方向用相同的力进行立足跳远,则下列说法中正确的是 ( )