某型号电阻阻值的合格标准是95~105Ω,A厂生产的电阻阻值按要求应当服从均值100

题型:多项选择题

问题:

某型号电阻阻值的合格标准是95~105Ω,A厂生产的电阻阻值按要求应当服从均值100Ω,均方差1Ω的正态分布,由于某种原因,阻值的均值变为101Ω(分布类型和均方差不变),此时以下说法正确的是()。

A.质量特性值中心与规范中心的偏差为0

B.质量特性值中心与规范中心已发生偏离

C.不合格品率上升

D.过程能力指数不变

考点:QMS质量管理审核员QMS质量管理审核员题库
题型:多项选择题

Once there were two brothers. They were very good to each other. They were half brothers because the elder brother’s mother was dead, and then his father married again. The stepmother (继母)was not kind to the elder brother, but the younger brother loved him and often helped him.

One day, the mother gave each of the brothers a box of seeds(种子) and enough food for a few days. She said to them, “Take them. Go and plant them. One of you must plant them on the east hill, and the other on the west hill. Don’t come back if the seeds don’t come out. ” The mother gave very bad seeds to the elder brother, but the two brothers didn’t know this, and set out the next morning.

When they came to a bridge, they sat down to rest. After that, they got up to say good-bye to each other, but they took the wrong boxes of seeds!

Ten days later, the elder brother’s seeds began to grow and he came back. But the younger brother did not return home because his seeds didn’t grow. At last, he died on the hill.

根据短文内容,选择正确案。(10分)

小题1:One day, the mother gave two boxes of seeds _________

A.only to the elder son

B.only to the younger son

C.to their father

D.to the two sons小题2:The mother asked the two brothers to _________.

A.plant the seeds on the west hill

B.come back soon after they planted the seeds

C.plant the seeds on two hills

D.take the trees and plant them.小题3: In fact the mother wanted __________      

A.the two brothers to plant trees

B.the two brothers to work hard

C.the elder brother to die

D.the younger brother to die小题4:Which of the following is NOT true?     

A.The mother was not kind to the elder brother

B.The younger brother loved the elder brother

C.The younger brother had two mothers

D.The elder brother had two mothers小题5:The story tells us that ________.     

A.one mustn’t do bad things

B.one mustn’t take the wrong box

C.one must help others

D.one must use good seeds

题型:多项选择题

番茄的果实里有多粒种子,原因是(   )

A.果实里有多个子房

B.胚珠内有多个卵细胞

C.子房里有多个胚珠

D.胚珠内完成了多次受精

题型:多项选择题
下列现象中,不属于摩擦起电的是(  )

A.用头发摩擦过的钢笔杆能够将碎纸屑吸引起来

B.磁铁能把钢针吸引起来

C.用干燥的毛刷刷毛料衣服时,毛刷上吸附着许多细微脏物

D.在干燥的天气中脱毛衣时,听到轻微的“噼啪”声,甚至在夜晚能看见火花

题型:多项选择题

一定量的CH4恰好与一定量的O2完全反应得到CO2、CO和H2O(1),产物的总质量为49.6g,将其通过足量的浓H2SO4后,洗气瓶增重25.2 g,则此甲烷完全燃烧还需O2的体积(标准状况下)为 [ ]

A. 8.96 L    

B. 6.72 L  

C. 4.48 L   

D. 2.24 L

题型:多项选择题

解决焦炉高向加热均匀性的方法只有废气循环。

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