相关系数r有正负、有大小,因而它反映的是两现象之间具体的数量变动关系。()

题型:判断题

问题:

相关系数r有正负、有大小,因而它反映的是两现象之间具体的数量变动关系。()

考点:初级统计师统计方法统计方法题库
题型:判断题

在国家发展和改革委员会关于实行核准制的《项目申请报告通用文本》中明确规定,项目申请报告中的“经济影响分析”的主要内容包括( )。

A.宏观经济影响分析

B.产业空间布局分析

C.费用效果分析

D.节能效果分析

E.行业影响分析

题型:判断题

铁代谢指标异常包括()

A.组织缺铁

B.红细胞内缺铁

C.总铁结合力和未结合铁的转铁蛋白升高

D.贮铁指标减低

E.血清铁和转铁蛋白饱和度减低

题型:判断题

设z=eusinv,而u=xy,v=x+y,则为()。

A.exy[xsin(x+y)-cos(x+y)]

B.exy[xsin(x+y)+cos(x+y)]

C.exy[xsinxy+cos(x+y)]

D.exy[ysin(x+y)+xcos(x+y)]

题型:判断题

世界博览会被誉为“经济、科技与文化界的奥林匹克盛会”。1851年,现代意义上的首届世界博览会在英国伦敦开幕,当时陈列的展品不可能有

①珍妮纺纱机
②网络长椅
③火车机车
④汽车
[ ]

A.①②B.①③               C.②③                                D.②④

题型:判断题

"Bad eyesight" A young man was called up for army service, but he didn’t want to become a soldier. When he went for his medical exam, ____(16)____ The doctor pointed to the eye chart on the wall and said," ____(17)____ " "The doctor line of what"the young man asked. " ____(18)____ "the doctor replied. "What chart"the man asked. " ____(19)____ "the doctor said. "What wall"the man said, Finally,the doctor decided that the man’s eyes were not good enough for army service. That evening the same young man was at a movie when another man came in and sat next to him in the dark. When the light went out, the young man saw that his neighbor whohad examined him earlier. Immediately he said,"Excuse,madam, ____(20)____ "

16().

A. but does this bus go to Main Street

B. The one on the wall.

C. he pretended that his eyesight was very bad.

D. Please read the top line.

E. he passed the exam.

F. Shall we go to the movies

G. The top line of the chart.

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