消防控制室图形显示装置须（）内能够显示输入的火灾警信号和反馈信号的状态信息。A．10

夕阳红老干部活动中心有跳棋、象棋共10副，可供28位老人同时进行棋类活动。象棋2人一副，跳棋4人一副，象棋和跳棋各有几副？

1920年11月下旬，广东早期青年团组织？——广州社会主义青年团正式成立，负责人是（）。

A.谭天度

B.谭植棠

C.谭平山

阅读以下关于输入输出接口设计的说明，回答问题1至问题3，将解答填入对应栏内。
【说明】
下图为采用查询方式工作的输入接口，地址译码器中A15～A1直接接到或门的输入端。

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。第1至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。选项中一项是多余选项。

( )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

( )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

( )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

( )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

( )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.

便携式载体催化甲烷检测报警仪的测量范围是（）。

A．0．10%～4．00%CH4

B．0．20%～4．00%CH4

C．0．00～4．00%CH4

D．0．00～5．00%CH4