A.X,Y必相互独立
B.X,Y,必不相关
C.必有E(XY)=E(X)E(Y)
D.必有D(X+Y)=D(X)+D(Y)
您可能感兴趣的试卷
你可能感兴趣的试题
A. 此病主要发生在根颈处,在主根、侧根、树干、枝条上有时也有发生
B. 在发病部位长有大小不等、近圆形的瘤,土壤含水量高,微碱性的土壤中易发病
C. 病菌在土壤中借水流、地下害虫或人为耕作进行传播,通过机械损伤、虫伤、嫁接口等各种伤口侵入根内
D. 以上全是
该类疾病的预防应从
A.出生后1周
B.出生后2周
C.出生后1个月
D.出生后4个月
E.出生后6个月
该批猪肉的处理措施是
A.弃去内脏,肉高温处理后食用
B.内脏、肉尸高温处理后可食用
C.剔骨肉经后熟后可食用
D.去掉病灶,肉高温处理后食用
E.不准解体,2m深坑加石灰掩埋
A. 借:营业外收入 6 000
贷:固定资产 6000
B. 借:营业收入 26000
贷:营业成本 20000
固定资产6000
C. 借:营业外收入 20000
贷:固定资产原价 20000
D. 借:营业收入 26 000
贷:营业戚本20000
固定资产原价6 000
该患者术后早期应采用的营养治疗是
A.空肠造口
B.鼻饲
C.胃造口
D.口服
E.肠外营养
该患者适宜的能量供给标准是
A.167.36~188.28kJ/(kg.d)[40~45kcal/(kg.d)]
B.146.44/(kg.d)[35kcal/(kg.d)]
C.62.76/(kg.d)[15kcal/(kg.d)]
D.125.52kJ/(kg.d)[30kcal/(kg.d)]
E.102.60kJ/(kg.d)[25kcal/(kg.d)]
A. 宏观目标
B. 微观目标
c. 任务目标
D. 过程目标
A.CT
B.MRI
C.SPECT
D.骨活检
A.肝癌、胃癌、肠癌
B.甲状腺癌、肾癌、肾上腺癌
C.肺癌、乳腺癌、前列腺癌
D.宫颈癌、卵巢癌、子宫内膜癌
A.长管状骨
B.肋骨
C.椎体
D.骶骨
最新试题
Who or what saved the girl’s life?()
The fact that we work or even play in groups illustrates the point that().
Which of the following about Waelbers is TRUE?()
From the last paragraph,can you tell whether the article is optimistic(乐观的)or pessimistic(悲观的)about the future of Indian women()
根据原文提供的信息,下列推断正确的一项是()
Who will favor the study results by researchers from the University of California?()
患者烦躁不安,为防止患者受伤应采取的保护措施是()。
He wants to change the world and make it better.()
The robot would stop in front of pets and people thanks to().
It can be inferred from the passage that the author’s attitude toward immigrant is().