某制造企业需求一零件，规格要求为100±3cm，在选择供应商时发现：供应商A提供的零

发布时间：2017-09-12 20:36 │ 来源：www.tikuol.com

题型：单项选择题

问题：

某制造企业需求一零件，规格要求为100±3cm，在选择供应商时发现：供应商A提供的零件近似服从正态分布N（100，1），供应商B提供的零件近似服从均匀分布U（97，103）；供应商A、B提供产品的价格相同，同时，该企业非常关注质量损失。以下哪种说法是正确的（）？

A.从理论上讲，A零件的合格率是99.73%，供应商B提供100%合格品，因此应选择B作为供应商

B.从供应商提供产品的分布看，均值相同，选择供应商A或B一样

C.A质量损失更低一些，应选择A作为供应商

D.根据上述信息无法做出判断

考点：管理学六西格玛管理六西格玛管理题库

题型：单项选择题

阅读理解。

     It was a beautiful sunny day. Miguel decided to go to the beach. He called his friends, but Mario was
at work, and Rosa was at her grandmother's home. So he had to go to the beach alone. He took his bathing
suit, towel, beach umbrella and his new boombox.
     When he arrived at the beach, there weren't many people. There was a family with two little children.
There were some American tourists at the shop. Miguel put up his beach umbrella and lay down. He
turned on his radio and began to enjoy the beautiful music.
     Soon Miguel went to sleep. While he was asleep, a man came and sat near him. He had a small radio
and it played same music as Miguel's. After a few minutes, the man picked up Miguel's boombox and
walked away. When Miguel woke up, his radio was gone, and the thief's little old radio was in its place.

1. What is a boombox according to the passage?

A. A TV set.
B. A radio.
C. An umbrella.
D. A bed.

2. Who went to the beach with Miguel?

A. Mario.
B. Rosa.
C. His grandma.
D. Nobody.

3. Put the following in the right order (次序) that happened.
① Miguel fell asleep. ② Miguel lay down on the beach.
③ Miguel called his friends. ④ Miguel got to the beach

A. ①②③④
B. ③④②①
C. ②③①④
D. ②③④①

4. Miguel was a ______ boy.

A. good
B. rich
C. careless
D. poor

5. What can we learn from the passage?

A. We should look after our things well when we are out.
B. We should not take our radios out.
C. We should not sleep on the beach.
D. We should not sleep alone.

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某交流电电源电压的瞬时值表达式为u=6sinl00πt（V），则下列说法中正确的是（　　）

A．用交流电压表测该电源电压时，示数是6V

B．用交流电压表测该电源电压时，示数是6V

C．用此电源给电磁打点计时器供电时，打点的时间间隔为0.01s

D．把标有“6V 3W”的小灯泡接在该电源上时，小灯泡将被烧毁

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治温病热入心包，神昏窍闭，宜选（）

A.牛黄

B.青蒿

C.石膏

D.地骨皮

E.生地黄

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拉深模试冲时，由于拉深间隙过大，使拉深件的高度不够，拉深件口部产生严重回弹，应（）

A、放大毛坯尺寸

B、放大凸模圆角半径

C、调整凸、凹模间隙至合理

D、增大压料力

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六M原则

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