皮皮学，免费搜题
登录
搜题
【多选题】
在组距数列中,均值大小不仅受组中值大小的影响,也受权数的影响,因此( )。A.
当组中值较大且权数较大时，均值接近组中值大的一方
B.
当组中值较小且权数较小时，均值接近组中值小的一方
C.
当组中值较大且权数较小时，均值接近组中值大的一方
D.
当组中值较小且权数较大时，均值接近组中值小的一方
E.
当各组的权数相同时，权数对均值的大小没有影响
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】Drip irrigation is the number one choice for Benin, because____________
A.
Benin is a developing country
B.
there is plenty of solar energy in Benin
C.
Benin does not have any irdgation systems
D.
it is a highly effective method of bringing water to arid land
【简答题】中国园林的雏形 是 ,以围定的自然风景为主体。
【单选题】下列程序的运行结果是() main() { int a=-1,b=1; if((++a<0)&&(b--<=0)) printf("%d%d\n",a,b); else printf("%d%d\n",b,a); }
A.
-11
B.
01
C.
10
D.
00
【单选题】心室肌的前负荷可以用下列哪项来间接表示
A.
等容收缩的心室容积
B.
等容舒张期的心室容积
C.
心室舒张末期的动脉压
D.
心室收缩末期容积或压力
E.
心室舒张末期容积或压力
【单选题】Until a few years ago most experts believed that young children couldn’t lie The late developmental psychologist Jean Piaget believed that children under 7 had trouble distinguishing between fantasy a...
A.
unconscious of the wrong or right
B.
slightly influenced by surrounding people
C.
unable to difierentiate illusion freIm truth
D.
ignorant of the idea of honesty and dishonesty
【单选题】听力原文：There is some evidence that the foreign firm affiliates in this country have developed rapidly without having a decisive effect on the technological capacities and export competitiveness of the c...
A.
The foreign firm affiliates are developing as rapidly as other local firms.
B.
The foreign firm affiliates are not developing as rapidly as other local firms.
C.
The foreign firm affiliates in this country have significantly enhanced the technological upgrading of local firms.
D.
The foreign firm affiliates in this country have hardly exerted any positive influence on the technological progress of local firms.
【单选题】The ______ of trade with foreign countries are gradually changing as China's industry develops.
A.
shapes
B.
chances
C.
masons
D.
patterns
相关题目：
参考解析：
知识点：
题目纠错 0
发布
