在成都二十中正在举行班级对抗赛,张明同学是短跑运动员,在百米竞赛中,测得他在6s

题型:选择题

问题:

在成都二十中正在举行班级对抗赛,张明同学是短跑运动员,在百米竞赛中,测得他在6s末的速度为9.5 m/s,12.5 s末到达终点的速度为9.8 m/s,则他在全程中的平均速度为(     )

A.9.5 m/s

B.9.8 m/s

C.10. m/s

D.8.0m/s

考点:速度和速率的区别
题型:选择题

We all know what it is like to be unable to turn your head because of a cold in the muscles of your neck, or because an unexpected twist has made your neck ache. The slightest move makes you jump with pain. Nothing could be worse than a pain in the neck.

That is why we use the phrase to describe some people who give you the same feeling. We have all met such people.

One is the man who always seems to be clapping his hands—often at the wrong time—during a performance in the theater. He keeps you from hearing the actors.

Even worse are those who can never arrive before the curtain goes up and the play begins. They come hurrying down to your row of seats. You are comfortably settled down, with your hat and heavy coat in your lap. You must stand up to let them pass. You are proud of yourself-control after they have settled into their seats…Well, what now…God, one of them is up again. He forgot to go to the men’s room, and once more you have to stand up, hanging on to your hat and coat to let him pass. Now, that is “a pain in the neck”.

Another, well—known to us all, is the person sitting behind you in the movies. His mouth is full of popcorn ; he is chewing loudly, or talking between bites to friends next to him. None of them remain still. Up and down, back and forth, they go—for another bag of popcorn, or something to drink.

Then, there is the man sitting next to you at lunch, smoking. He wants you to enjoy it too, and blows smoke across your food into your mouth.

We must not forget the man who comes into a bus or subway and sits down next to you, just as close as you will let him. You are reading the newspaper and he gets closer so that he can read the paper with you. He may even turn the paper to the next page before you are ready for it.

We also call such a person a “rubber neck”, always getting close to where it does not belong, like neighbors who watch all your visitors. They enjoy learning about your personal business. People have a strong dislike for “rubber necks”. They hate being watched secretly.

小题1:Where can you find this passage?

A.In a medicine dictionary.

B. in a kids’ story book.

C.In a social science book.

D.In a science textbook.小题2:According to the passage, how do you feel when late comers walk back and forth in front of you in a cinema?

A.disturbed.

B.bored.

C.ignored.

D.relaxed.小题3:A “rubber neck” often __________________ .

A.says bad words behind people.

B.quarrels face to face with neighbors.

C.bargains with salespeople over the price

D.asks about other people’s business小题4:Which of the following persons CANNOT be described as a “pain in the neck”?

A.Someone who often claps at the wrong time during a performance.

B.Someone who feels ache in his neck due to a cold in the muscles.

C.Someone who sits next to you smoking, which you never enjoy.

D.Someone who keeps eating or talking all through the movies.小题5:What is the main purpose of the author?

A.To tell people what might be bad manners in public.

B.To criticize (批评) the people who might be a “pain in the neck”

C.To show anger to those who are described as a “pain in the neck”.

D.To tell people how to stop the pain in the neck.

题型:选择题

企业标准应在发布后( )内向政府标准化主管部门备案。

A.一星期
B.10天
C.15天
D.30天

题型:选择题

某企业生产甲、乙两种产品,有关资料如下表:

项 目原材料(元)定额(元)工时(元)工资(元)制造费用(元)合计(元)
甲产品140001200
乙产品6000800
合计2200020000200013000156005600
假设:甲产品本月完工100件,在产品100件,在产品完工程度30%。乙产品本月全部完工80件.
要求:根据上述资料计算甲、乙产品的完工成本(写出计算过程,列示产品成本计算单),并编制结转产品成本的会计分录。

题型:选择题

8个月男婴,呕吐腹泻1周,伴口渴,尿少,嗜睡,皮肤弹性极差,前囟及眼窝明显凹陷,皮肤有花纹,脉细数,四肢厥冷,血清钠150mmol/L,考虑为

A.中度低渗性脱水
B.中度等渗性脱水
C.重度低渗性脱水
D.重度高渗性脱水
E.重度等渗性脱水

题型:选择题

转速表显示不正确或失效时,禁止机组启动。

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