聚乙烯燃气管材代号SDR代表()A、标准代号 B、标准尺寸比 C、公称直径 D、熔融指数

题型:单项选择题

问题:

聚乙烯燃气管材代号SDR代表()

A、标准代号

B、标准尺寸比

C、公称直径

D、熔融指数

考点:燃气知识综合题燃气知识综合题题库
题型:单项选择题

阅读理解。    

     Many scientists find that colors can change people's feelings. It's very interesting. Some colors can

make people feel relaxed, and some colors can make people feel nervous. Now, this kind of knowledge

is being used in many places. For example, school walls are always painted green because green makes

students feel relaxed. It is also good for the student's eyes. Some books are also green or light blue for

the same reason. Restaurant owners not only have to know how to make food, but also have to know

how to make money. Here are some things they've learned from scientific studies. The color red makes

people hungry. Many fast food restaurants have red furniture or walls. Soft colors like pink and light blue

make people feel relaxed, so they spend more time eating. Loud music may be nice at first, but it soon

makes people want to leave. Hard seats also make customers want to eat quickly and leave. Many

restaurants, especially fast food restaurants, use this knowledge to make customers eat faster.

1. How does the color green make the students feel?

A. Hungry.                    

B. Nervous.

C. Angry.                        

D. Relaxed.

2. How does the color red make most people feel?

A.Hungry.                  

B. Comfortable.

C. Excited.                      

D. Worried.

3. Which color isn't mentioned in this passage?

A. Green.                        

B. White.

C. Light blue.                  

D. Red.

4. What do many fast food restaurants do?

    ④Play loud music.

    ②Play soft music.

    ③Have hard seats.

    ④Paint their walls red.

A. ①②③    

B. ①③④

C. ①②④    

D. ②③④

5. Which is the best title for this passage?

A. Color and Restaurant

B. Use Color to Make Money

C. Color and Science

D. Use Color to Change Feelings

题型:单项选择题

有以下程序:
main()
char ch[]="uvwxyz",*pc;
pc=ch; printf("%c\n",*(pc+5));
)
程序运行后输出的结果是( )。

A.z
B.0
C.元素ch[5]的地址
D.字符y的地址

题型:单项选择题

中国是一个农业大国,下图对研究中国农业发展史来说

[ ]

A.是重要的原始资料

B.是虚假的人造史料

C.没有任何史料价值

D.反映了农业实际状况

题型:单项选择题

原发性血小板减少性紫癜做骨髓穿刺的目的是

A.证明有血小板减少
B.了解骨髓增生程度
C.了解巨核细胞数量及有无成熟障碍
D.了解有无合并缺铁性贫血
E.证明有无血小板抗体存在

题型:单项选择题

罂粟壳的功效不包括

A.涩肠
B.敛肺
C.止痛
D.止血
E.止泻

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