【多选题】下列说法正确的是______。
A.
Raptor是一种基于流程图的可视化编程开发环境
B.
Raptor可以动态执行算法,这有利于观察算法的执行过程。
【判断题】某企业某年各季度销售额和利润资料如下: 季度 1 2 3 4 销售额(百万元) 利润率(%) 150 30 180 32 200 35 210 36 则该年各季度平均利润率为( 30%+32%+35%+36%)/4=33.25%。( )
【判断题】刚体作瞬时平移时,其上各点速度相同、加速度也相同。
【单选题】在U形玻璃管中,将一滤片置于二株菌之间使之不能接触,在左臂发现有原养型菌出现,这一现象不是由于
【单选题】What does the term "lvy League" officially refer to?
A.
An official organization which helps those poor students.
B.
An academic debate in which the eight colleges students compete.
C.
An organization which gives scholarships to those brilliant students.
D.
An athletic conference in which the eight Colleges' sports teams compete.
【简答题】What does the term mass media include? (20 points)
【判断题】(3分) 某企业某年各季度销售额和利润资料如下: 季度 1 2 3 4 销售额(百万元) 150 180 200 210 利润率( % ) 30 32 35 36 则该年各季度平均利润率为( 30%+32%+35%+36% ) / 4 = 33.25% 。
【单选题】按照结施 -04 施工,图中存在问题的是