在GSM-R网络中，HLR、VLR、AuC主要存储哪些用户信息？

Molly信箱是一个报刊栏目，主持人Molly回答读者提出的各种问题。下列小1-5题是五位读者的来信。请从A、B、C、D、E和F中为每封来信选出最合适的回复，并在答题纸上将该选项桔号涂黑。选项中一项是多余选项。

小题1:Dear Molly,

I have a problem. My parents are always talking to me about studying. They want me to study harder so I can go to a good school. I know studying is very important, but my parents put too much pressure on me. How can I explain to my parents that I need some free time?

------ Overworked

小题2:Dear Molly,

My best friend Tony is a nice young man, but he has a bad habit. He is always late. No matter where he is going to what he is doing, he is never on time. Once he turned up thirty minutes late for a meeting! What can I do to break him of this bad habit?

------ Worried

小题3:Dear Molly,

I have a new roommate named Louis. He is a good friend of mine, but he is driving me crazy because he is very untidy. He leaves his dirty clothes everywhere, and he never makes his bed. I am extremely neat. What can I do?

----Unhappy

小题4:Dear Molly,

My cousin plays computer games a lot and he keeps on talking to me about various games. I don’t have any interest at all, but I find it difficult to stop him without hurting his feelings. Would you kindly give me some advice?

--- Shy

小题5:Dear Molly,

I’m feeling upset these days because the result of my last English exam was not as good as I had expected. My teacher comforted me, saying “Don’t worry. You can do better next time.” But I’m still feeling bad. I need your help.  

----Disappointed

A

B

C

D

E

F

引起副溶血性弧菌食物中毒的中毒食品主要是（）

A.肉类食品

B.海产品

C.乳类及其制品

D.家庭自制发酵食品

E.糕点类食品

过氧化氢（H₂O₂）俗名双氧水，请按下列要求回答问题并计算：

（1）H₂O₂的电子式为       ；固态时H₂O₂为       晶体。

（2）向含有酚酞的Na₂CO₃溶液中滴入双氧水（H₂O₂），溶液由红色褪至无色；再向该溶液中加入足量的0.1mol·L^-1的NaOH溶液，溶液始终不再显红色，主要原因是双氧水具有_________性。

（3）如果将9.60×10^-4mol在溶液中还原成较低价态，需用0.100mol·L^-1的H₂O₂溶液24.0mL，试通过计算确定A元素的最终价态。

轨道道岔质量要求及允许偏差，心轨尖端与护轨工作边中点相对（垂直）偏差（）毫米。

A、±40

B、±30

C、±50

D、±60

新井位设备就位后，在使用前由（）负责对数码、过卷阀、重锤式防碰装置逐一进行防碰检验。