A:having been picked out; was set
B:to have been chosen; set
C:to be picked out; was set
D:to have been chosen; was set
小明和小红想探究“浮力大小与物体在液体中所处深度是否有关”:
下面一组数据是10名学生测试跳绳项目的成绩(单位:个/分钟).
176 180 184 180 170 176 172 164 186 180
该组数据的众数、中位数、平均数分别为( )
下列各句中,划线的词语使用不恰当的一项是( )