站内工艺管道设计压力小于0.4MPa时采用的钢管应符合哪些国家现行规定？

一元二次方程x²-4x+3=0的解是[ ]

A.x=1

B.x₁=-1，x₂=-3

C.x=3

D.x₁=1，x₂=3

People have been burying the dead at Salem’s Hope Cemetery since 1833. The place is filled with old gravestones and gothic mausoleums(哥特式陵墓), the spirits of the dead hanging over the land like an early morning fog.

Keeping watch, a few steps from the road with her skirt over the pedestal (基座), is Goldie Belle Taylor, her face weathered but otherwise in good condition. On this day, she is holding a bunch of pink rises because Goldie Belle always holds flowers. Someone makes sure of that.

“And she has had fresh flowers in her hands for the last 150 years.” Karen Biery lives in Damascus, about five miles west of Hope Cemetery. She’s written a book based on the legend of Goldie Belle Taylor titled Believe. In 1886, at the age of two, young Goldie Belle used her hands to sop up (抹去) the left over elderberry juice from her father’s iron kettle. She died not long after from poisoning. She was the love of her dad’s life, and he was so upset that he sold the family farm to buy the Italian made statue, which today marks her grave.

At first, it was her father who brought the flowers and laid them in her hands. When he died in 1896, the flowers kept coming. Her flowers are different per season. Why do the flowers keep miraculously appearing? People have tried to find out by having camped by the statue, but not even the groundskeepers have been able to catch the criminal.

It’s said that a fairy arrives at Hope Cemetery looking for the grave of her birth mother. She comes across Goldie Belle’s statue.

小题1:The underlined word “that” in paragraph 2 probably refers to________.

A．her face in good condition

B．her bunch of pink roses

C．Goldie Belle Taylor is holding pink roses

D．Goldie Belle Taylor always holds flowers小题2:It can be inferred from the third paragraph __________.

A．her father was poisonous

B．the iron kettle was poisonous

C．elderberry juice was poisonous

D．it was her father that hated her小题3:After her father died, the flowers in the hands of Goldie Belle Taylor_______.

A．usually change

B．were stolen

C．are no longer fresh

D．come from a criminal小题4:What would be the best title for the passage?

A．A fairy brings the flowers.

B．The mystery of Goldie’s flowers.

C．What happens to the girl?

D．How do the flowers get there?

在下面几个知识分子中，认同尼采式个人主义的是（）。

A.鲁迅

B.胡适

C.周作人

D.罗家伦

按需求量范围，运输需求可以划分为（）。

A.总体运输需求和个别运输需求

B.货物运输需求和旅客运输要求

C.短期运输需求和长期运输需求

D.营业性运输需求和自运运输需求

3PE和FBE同时存在的失效模式是（）。