在二维图表中,绘图区以坐标轴为界并包含数据系列、分类名称、刻度线和坐标轴标题。()
参考答案:错
---- Putting on a happy face not only helps us make friends but also makes us feel better.
---- _______.
A.I’d love to
B.I’m with you on that
C.It’s up to you
D.It’s my pleasure
船舶作定常旋回运动时,其角加速度()。
A.逐渐增大
B.逐渐减小
C.不变
D.为零